At Hongyancun Station in Chongqing, the station is so deep underground that it takes 10 minutes and several escalators just ...

The city is unlike anywhere else thanks to its vertically sprawling cityscape where buildings cling to cliffs.

Chongqing in China is 31,815 sq miles - making ... and outdoor and up and down often blurred, reports the Express. Metro lines appear from tunnels through the mountains, plunging straight through ...