#1: Toronto, Ontario(01 of25)
Open Image ModalThe downtown skyline is viewed after sunset from Centre Island in Toronto Harbour on July 1, 2014 in Toronto, Ontario, Canada. Canada's most populous city is undergoing a major economic boom with high-rise construction and renovation projects underway throughout the downtown and outlying neighborhoods. (Photo by George Rose/Getty Images) (credit:George Rose via Getty Images)
#2: Montreal, Quebec(02 of25)
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#3: Stockholm, Sweden(03 of25)
Open Image Modal (credit:Johan Sjolander via Getty Images)
#4: Amsterdam, Netherlands(04 of25)
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#5: San Francisco, U.S.A.(05 of25)
Open Image ModalThe Painted Ladies, Victorian-style houses with Downtown at dusk in the background, Alamo Square, San Francisco, California, United States of America. (Photo by DeAgostini/Getty Images) (credit:DEA / W. BUSS via Getty Images)
#6: Melbourne, Australia(06 of25)
Open Image Modal (credit:Natural at it's best. via Getty Images)
#7: Zurich, Switzerland(07 of25)
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#8: Washington, DC, U.S.A.(08 of25)
Open Image ModalA skyline view of Washington, District of Columbia at dusk. The Lincoln Memorial, Washington Monument and the U.S. Capitol Building illuminate the Washington, D.C. skyline as seen from the nearby Iwo Jima Memorial in Rosslyn, Virginia. (credit:Samuel Antonio via Getty Images)
#9: Sydney, Australia(09 of25)
Open Image Modal (credit:Jerry Driendl via Getty Images)
#10: Chicago, U.S.A.(10 of25)
Open Image ModalPanoramic view of the Chicago Skyline as photographed from Grant Park on May 10, 2014 in Chicago, Illinois. (Photo By Raymond Boyd/Getty Images) (credit:Raymond Boyd via Getty Images)
#11: Los Angeles, U.S.A.(11 of25)
Open Image ModalGiant sign in Hollywood. Los angeles, California. USA (credit:Siqui Sanchez via Getty Images)
#12: Brussels, Belgium(12 of25)
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#13: New York City, U.S.A.(13 of25)
Open Image Modal (credit:miki1991 via Getty Images)
#14: Frankfurt, Germany(14 of25)
Open Image Modal (credit:Jorg Greuel via Getty Images)
#15: Osaka, Japan(15 of25)
Open Image ModalJapan, Kinki Region, Osaka Prefecture, Osaka-shi, Yodogawa-ku, View of Grand Front Osaka and Umeda Sky Building. (Photo by: JTB Photo/UIG via Getty Images) (credit:JTB Photo via Getty Images)
#16: Tokyo, Japan(16 of25)
Open Image ModalMount Fuji stands behind illuminated buildings as the sun sets in Tokyo, Japan, on Thursday, Nov. 27, 2014. Japan's consumer price gains slowed for a third straight month, challenging Bank of Japan Governor Haruhiko Kuroda's effort to stoke faster inflation. Photographer: Tomohiro Ohsumi/Bloomberg via Getty Images (credit:Bloomberg via Getty Images)
#17: Barcelona, Spain(17 of25)
Open Image Modal (credit:fStop Images - Tobias Titz via Getty Images)
#18: Santiago, Chile(18 of25)
Open Image ModalBuildings stand in the skyline of downtown Santiago, Chile, on Wednesday, Dec. 3, 2014. Chilean unemployment unexpectedly fell in the three months through October, the first month of a quarter that Finance Minister Alberto Arenas forecasts will see a 'small and moderate reactivation' in the economy. Photographer: Ronald Patrick/Bloomberg via Getty Images (credit:Bloomberg via Getty Images)
#19: Paris, France(19 of25)
Open Image Modal (credit:compassandcamera via Getty Images)
#20: Madrid, Spain(20 of25)
Open Image ModalTwin leaning towers known as Puerta de Europa are seen in the business district in Madrid, Spain Wednesday Sept. 26, 2012. (AP Photo/Paul White) (credit:ASSOCIATED PRESS)
#21: Taipei, Taiwan(21 of25)
Open Image ModalThe Taipei city skyline at sunset the day before a typhoon arrives. Taipei 101, formerly the tallest building in the world at 508m, dominates the skyline. (Photo by Craig Ferguson/LightRocket via Getty Images) (credit:Craig Ferguson via Getty Images)
#22: London, England(22 of25)
Open Image Modal (credit:Luis Davilla via Getty Images)
#23: Seoul, South Korea(23 of25)
Open Image ModalA general view shows the city skyline of southern Seoul and the Han River, before sunrise on January 28, 2015. In January South Korea sees an average of some 10 hours of daylight, while the county's darkest month is December with an average of 9.5 daylight hours, and July being the lightest month averaging 14.5. AFP PHOTO / Ed Jones (credit:ED JONES via Getty Images)
#24: Hong Kong, China(24 of25)
Open Image ModalHigh-rise commercial buildings are lit up at night in Hong Kong Thursday, July 31, 2014. Hong Kong's skyline is one of the most popular tourist attractions. (AP Photo/Kin Cheung) (credit:ASSOCIATED PRESS)
#25: Rome, Italy(25 of25)
Open Image Modal (credit:fotoVoyager via Getty Images)