Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

The façade of this building looks like a bingo board, but it's really a giant clock by a famed graphic designer.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.