6. Chenggong, China
This is a little different because Chenggong is a new city. There are more than 100,000 new apartments but no one living in them. It was an overspill point for Kunming, a nearby city of 6.5 million people. There’s a very small community of students, security guards and workers but otherwise the city is empty. There’s a stadium, shopping malls and huge squares that are occupied by nothing other than strange works of art.