At first glance, you'd think that Cafe Diglas in Vienna, Austria, was just another normal, refined, coffee house in the old Viennese style.
But one visit to its restrooms proves otherwise.
For as you can see from the viral video above, the glass door on each toilet cubicle is completely see-through - and only becomes opaque when you turn the lock. Is it magic? Is it science? Whatever it is, it's pretty damn kühl.
Whatever will they think of next - an app that covers up your toilet noises?! Oh, wait. They already did: