The empty cities, seen from above and at street level, offer a view of how rapidly urbanization is occurring in China.
"We've tracked down satellite photos of these unnerving places, based on a report from Forensic Asia Limited. They call it a clear sign of a bubble: 'There's city after city full of empty streets and vast government buildings, some in the most inhospitable locations. It is the modern equivalent of building pyramids. With 20 new cities being built every year, we hope to be able to expand our list going forward.'"