We know what the natural wonders of the world are (the Grand Canyon, Mount Everest, etc.), but what about the absolute must-see buildings? The ones that will make your jaw drop and will have you asking, "how did they do that!?"
1. Empire State Building, New York City, NY
This art deco skyscraper stood as the world's tallest building for more than forty years (it's now 12th) and offers incredible views of The Big Apple. The initial schematics for the building were drawn up in two weeks by Gregory Johnson and took just over a year to build (astonishing given the tower is 102 storeys and was built in the 30s).
Next: A ceiling that floats