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Open Image ModalDaniel Barenboim conducts the Berlin Philharmonic Orchestra in front of Brandenburg Gate during the central event commemorating the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Michael Sohn) (credit:Michael Sohn/AP)
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Open Image ModalBalloons of the art installation 'Lichtgrenze 2014' ("light border 2014") raise in Berlin Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/dpa, Key Nietfeld) (credit:ASSOCIATED PRESS)
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Open Image ModalFireworks illuminate the sky above the Brandenburg Gate during the celebrations on the occasion of the 25th anniversary of the fall of the Berlin Wall in Berlin, Germany, 9 November 2014. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Kay Nietfeld/dpa (credit:Kay Nietfeld/DPA)
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Open Image ModalDaniel Barenboim conducts the Berlin Philharmonic Orchestra in front of Brandenburg Gate during the central event commemorating the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Michael Sohn) (credit:Michael Sohn/AP)
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Open Image ModalSpectators take photos of Brandenburg Gate during the central event commemorating the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Michael Sohn) (credit:ASSOCIATED PRESS)
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Open Image ModalThe writing on an illuminated balloon, part of the so-called 'Border of Light' reads 'Anja and Michi 4ever' near the Boesebridge, also known as Bornholmer Bruecke (Bornholmer Bridge) in Berlin, Germany, 9 November 2014. The bridge was the first border crossing where citizens of East Germany where first allowed to cross into West Germany on 9 November 1989. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Soeren Stache/dpa (credit:Soeren Stache/DPA)
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Open Image ModalDaniel Barenboim conducts the Berlin Philharmonic Orchestra in front of Brandenburg Gate during the central event commemorating the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Michael Sohn) (credit:Michael Sohn/AP)
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Open Image ModalBalloons of the art installation 'Lichtgrenze 2014' fly away in front of Brandenburg Gate during the central event commemorating the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Michael Sohn) (credit:Michael Sohn/AP)
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Open Image ModalFireworks illuminate the sky above the Brandenburg Gate during the celebrations on the occasion of the 25th anniversary of the fall of the Berlin Wall in Berlin, Germany, 9 November 2014. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Kay Nietfeld/dpa (credit:Kay Nietfeld/DPA)
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Open Image ModalSpectators take photos of Brandenburg Gate during the central event commemorating the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Michael Sohn) (credit:Michael Sohn/AP)
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Open Image ModalThousands of visitors celebrate on the occasion of the 25th anniversary of the fall of the Berlin Wall as the balloons of the so-called 'Lichtgrenze' (Border of Light), rise into the sky in front of the Brandenburg Gate in Berlin, Germany, 9 November 2014. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Kay Nietfeld/dpa (credit:Kay Nietfeld/DPA)
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Open Image ModalA choir performs on stage on the occasion of the 25th anniversary of the fall of the Berlin Wall in front of the Brandenburg Gate in Berlin, Germany, 9 November 2014. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Kay Nietfeld/dpa (credit:Kay Nietfeld/DPA)
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Open Image ModalThousands of visitors celebrate on the occasion of the 25th anniversary of the fall of the Berlin Wall as the balloons of the so-called 'Lichtgrenze' (Border of Light), rise into the sky in front of the Brandenburg Gate in Berlin, Germany, 9 November 2014. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Kay Nietfeld/dpa (credit:Kay Nietfeld/DPA)
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Open Image ModalThousands of people gather in front of Brandenburg Gate during the central event commemorating the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Michael Sohn) (credit:Michael Sohn/AP)
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Open Image ModalPhotos of people killed when trying to escape from the GDR are displayed in front of Brandenburg Gate during the central event commemorating the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Michael Sohn) (credit:Michael Sohn/AP)
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Open Image ModalBalloons of the art installation 'Lichtgrenze 2014' ("light border 2014") fly away at the East Side Gallery, a remnant of the Berlin Wall, in Berlin Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/dpa, Lukas Schulze) (credit:ASSOCIATED PRESS)
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Open Image ModalBalloons of the art installation 'Lichtgrenze 2014' fly away at Potsdamer Platz to commemorate the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/dpa, Soeren Stache) (credit:ASSOCIATED PRESS)
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Open Image ModalBalloons of the art installation 'Lichtgrenze 2014' flue away in front of Brandenburg Gate during the central event commemorating the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/dpa, Bernd von Jutrczenka) (credit:ASSOCIATED PRESS)
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Open Image ModalPeople walk past the art installation 'Lichtgrenze 2014' that runs along remnants of the Berlin Wall at the East Side Gallery in Berlin Sunday, Nov. 9, 2014. 5 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/dpa, Maja Hitij) (credit:ASSOCIATED PRESS)
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Open Image ModalPeople wait for balloons to be set free as balloons on the opposite bank of the river Spree fly away in front of the Reichstag building during the central event to commemorate the Fall of the Wall next to the Reichstag in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Steffi Loos) (credit:ASSOCIATED PRESS)
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Open Image ModalSinger Anna Loos of the band Silly performs on stage during the celebrations at the Brandenburg Gate in Berlin, Germany, 9 November 2014. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Kay Nietfeld/dpa (credit:Kay Nietfeld/DPA)
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Open Image ModalBalloons of the art installation 'Lichtgrenze 2014' flue away in front of Brandenburg Gate during the central event commemorating the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Michael Sohn) (credit:Michael Sohn/AP)
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Open Image ModalFireworks explode behind Brandenburg Gate during the central event commemorating the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Michael Sohn) (credit:Michael Sohn/AP)
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Open Image ModalBritish singer Peter Gabriel performs on stage during the celebrations at the Brandenburg Gate in Berlin, Germany, 9 November 2014. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Bernd von Jutrczenka/dpa (credit:Bernd von Jutrczenka/DPA)
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Open Image ModalGerman Chancellor Angela Merkel (CDU, L-R), German President Joachim Gauck and his partner Daniela Schadt take part in the celebrations commemorating the 25th anniversary of the fall of the Berlin Wall in in front of the Brandenburg Gate in Berlin, Germany, 9 November 2014. Numerous events are taking place to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Kay Nietfeld/dpa (credit:Kay Nietfeld/DPA)
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Open Image ModalSinger Anna Loos of the band Silly performs on stage during the celebrations at the Brandenburg Gate in Berlin, Germany, 9 November 2014. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Bernd von Jutrczenka/dpa (credit:Bernd von Jutrczenka/DPA)
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Open Image ModalBalloons of the art installation 'Lichtgrenze 2014' flue away in front of Brandenburg Gate during the central event commemorating the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Markus Schreiber) (credit:Markus Schreiber/AP)
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Open Image ModalBalloons of the art installation 'Lichtgrenze 2014' fly away in front of Brandenburg Gate during the central event commemorating the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Markus Schreiber) (credit:Markus Schreiber/AP)
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Open Image ModalFormer Soviet leader Mikhail Gorbachev waves to spectators before he releases a balloon in front of Brandenburg Gate during the central event commemorating the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Michael Sohn) (credit:Michael Sohn/AP)
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Open Image ModalBalloons of the art installation 'Lichtgrenze 2014' flue away in front of Brandenburg Gate during the central event commemorating the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Michael Sohn) (credit:Michael Sohn/AP)
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Open Image ModalGerman President Joachim Gauck, left, holds hand with former Polish President Lech Walesa before they release balloons in front of Brandenburg Gate during the central event commemorating the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Michael Sohn) (credit:Michael Sohn/AP)
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Open Image ModalBalloons of the so-called 'Lichtgrenze' (Border of Light), rise into the sky on the occasion of the 25th anniversary of the fall of the Berlin Wall in front of the Brandenburg Gate in Berlin, Germany, 9 November 2014. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Britta Pedersen/dpa (credit:Britta Pedersen/DPA)
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Open Image ModalBalloons of the so-called 'Lichtgrenze' (Border of Light), rise into the sky on the occasion of the 25th anniversary of the fall of the Berlin Wall in front of the Brandenburg Gate in Berlin, Germany, 9 November 2014. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Wolfgang Kumm/dpa (credit:Wolfgang Kumm/DPA)
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Open Image ModalBalloons fly over the Reichstag during the central event to commemorate the Fall of the Wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Steffi Loos) (credit:Steffi Loos/AP)
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Open Image ModalFormer leader of the Soviet Union Mikhail Gorbachev takes part in the celebration on the occasion of the 25th anniversary of the fall of the Berlin Wall in front of the Brandenburg Gate in Berlin, Germany, 9 November 2014. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Bernd von Jutrczenka/dpa (credit:Bernd von Jutrczenka/DPA)
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Open Image ModalThousands of visitors celebrate on the occasion of the 25th anniversary of the fall of the Berlin Wall in front of the Brandenburg Gate in Berlin, Germany, 9 November 2014. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Kay Nietfeld/dpa (credit:Kay Nietfeld/DPA)
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Open Image ModalGerman singer Udo Lindenberg performs with his band on stage during the celebration on the occasion of the 25th anniversary of the fall of the Berlin Wall in front of the Brandenburg Gate in Berlin, Germany, 9 November 2014. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Kay Nietfeld/dpa (credit:Kay Nietfeld/DPA)
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Open Image ModalFireworks explode behind Brandenburg Gate during the central event to commemorate the Fall of the Wall in Berlin, Germany, Sunday, Nov. 9, 2014. The 25th anniversary of the fall of the wall on Nov. 9, 1989 is marked with numerous events on the weekend. (AP Photo/Markus Schreiber) (credit:Markus Schreiber/AP)
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Open Image ModalThousands of visitors wait for the illuminated balloons, part of the so-called 'Border of Light', rise into the sky at the Potsdamer Platz (square) in Berlin, Germany, 9 November 2014. The 'Border of Light' traces the course of the former Berlin Wall between East and West Berlin on a stretch of 15 kilometre across Berlin. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Soeren Stache/dpa (credit:Soeren Stache/DPA)
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Open Image ModalIlluminated balloons, part of the so-called 'Border of Light', rise into the sky at the Potsdamer Platz (square) in Berlin, Germany, 9 November 2014. The 'Border of Light' traces the course of the former Berlin Wall between East and West Berlin on a stretch of 15 kilometre across Berlin. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Soeren Stache/dpa (credit:Soeren Stache/DPA)
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Open Image ModalThousands of visitors wait for the illuminated balloons, part of the so-called 'Border of Light', rise into the sky at the Potsdamer Platz (square) in Berlin, Germany, 9 November 2014. The 'Border of Light' traces the course of the former Berlin Wall between East and West Berlin on a stretch of 15 kilometre across Berlin. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Soeren Stache/dpa (credit:Soeren Stache/DPA)
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Open Image ModalFireworks explode behind Brandenburg Gate during the central event to commemorate the Fall of the Wall in Berlin, Germany, Sunday, Nov. 9, 2014. The 25th anniversary of the fall of the wall on Nov. 9, 1989 is marked with numerous events on the weekend. (AP Photo/Markus Schreiber) (credit:Markus Schreiber/AP)
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Open Image ModalFormer Hungarian Prime Minister Miklos Nemeth smiles before he releases a balloon in front of Brandenburg Gate during the central event commemorating the fall of the wall in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Michael Sohn) (credit:Michael Sohn/AP)
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Open Image ModalPeople watch balloons of the art project 'Lichtgrenze 2014' ('lightborder 2014') in Berlin, Germany, Sunday, Nov. 9, 2014. The light installation featuring 8,000 luminous white balloons commemorates the division of Berlin where the 25th anniversary of the fall of the wall is marked with numerous events. On Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Steffi Loos) (credit:Steffi Loos/AP)
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Open Image ModalPeople pass by balloons of the art project 'Lichtgrenze 2014' ('lightborder 2014') next to the Reichstag in Berlin, Germany, Sunday, Nov. 9, 2014. The light installation featuring 8,000 luminous white balloons commemorates the division of Berlin where the 25th anniversary of the fall of the wall is marked with numerous events. On Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Steffi Loos) (credit:Steffi Loos/AP)
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Open Image ModalBalloons of the light installation Lichtgrenze 2014 (light border 2014) sit in front of Brandenburg Gate during the central event to commemorate the Fall of the Wall in Berlin, Germany, Sunday, Nov. 9, 2014. The 25th anniversary of the fall of the wall on Nov. 9, 1989 is marked with numerous events on the weekend. (AP Photo/Markus Schreiber) (credit:Markus Schreiber/AP)
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Open Image ModalPeople pass by balloons of the art project 'Lichtgrenze 2014' ('lightborder 2014') in Berlin, Germany, Sunday, Nov. 9, 2014. The light installation featuring 8,000 luminous white balloons commemorates the division of Berlin where the 25th anniversary of the fall of the wall is marked with numerous events. On Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Steffi Loos) (credit:Steffi Loos/AP)
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Open Image ModalPeople pass by balloons of the art project 'Lichtgrenze 2014' ('lightborder 2014') next to the Reichstag in Berlin, Germany, Sunday, Nov. 9, 2014. The light installation featuring 8,000 luminous white balloons commemorates the division of Berlin where the 25th anniversary of the fall of the wall is marked with numerous events. On Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Steffi Loos) (credit:Steffi Loos/AP)
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Open Image ModalChildren look through a crack of the so-called hinterland wall (interior wall) decorated with roses at the Berlin Wall memorial site at Bernauer Strasse in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Steffi Loos) (credit:ASSOCIATED PRESS)
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Open Image ModalPedestrians walk along the course of the former BerlinWall near the Boesebridge, also known as Bornholmer Bruecke (Bornholmer Bridge) in Berlin, Germany, 9 November 2014. The bridge was the first border crossing where citizens of East Germany where first allowed to cross into West Germany on 9 November 1989. Numerous events are taking place in Berlin to commemorate the 25th anniversary of the fall of the Berlin Wall. Photo: Soeren Stache/dpa (credit:Soeren Stache/DPA)
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Open Image ModalGerman Chancellor Angela Merkel, left, and the Mayor of Berlin Klaus Wowereit, 3rd from left, place candles to commemorate the victims of the wall at the Berlin Wall memorial site at Bernauer Strasse in Berlin, Germany, Sunday, Nov. 9, 2014. 25 years ago - on Nov. 9, 1989 - the East-German government lifted travel restrictions and thousands of East Berliners had pushed their way past perplexed border guards to celebrate freedom with their brethren in the West. (AP Photo/Markus Schreiber) (credit:ASSOCIATED PRESS)