A crazy multi-layered city is home the the deepest underground in the world. Chongqing in China is known as 'The 8D City' due to its complex, multi-dimensional urban layout, which creates a ...

The world's deepest underground city is a mind-boggling multi-tiered metropolis. Chongqing in China, dubbed 'The 8D City', is probably one of the craziest cities you'll ever go to. It boasts an ...

A city in China is known as 'The 8D City' due it's multi-layered construction, with trains rushing through buildings and the deepest underground system in the world ...