Movin' On Up
They're often a little eccentric, but always seem like a pretty great idea (such as this green roof atop Chicago's City Hall). Here's a look at some of the world's craziest buildings that were built on top of other buildings.
Hunan Province, China
Here's a whole neighborhood on top of a building in China.
New York City, New York
Check out this modern, three-story luxury home on top of an old apartment building in New York City.
13th Street and 3rd Ave, New York City
This mysterious house appears to be an actual residence, with a patio and a chimney.
Mall Rooftop, Hunan, China
These houses serve as offices for a real estate management company at Jiutian International Square in Zhuzhou, Hunan Province, China.
Beijing, China
This illegal wonder looks like something out of an amusement park. Or Jurassic Park.
Cape Town, South Africa
Here's a trailer park on top of a hotel; each trailer is a hotel suite decorated by a different artist.