Researchers mapped exactly where buildings are in the world and how much space they take up. The result is a mind boggling look at how the world develops. From the latest skyscraper in a Chinese megalopolis to a six‑foot‑tall yurt in Inner Mongolia, researchers at the Technical University of Munich claim they have created a map of all buildings worldwide: 2.75 billion building models set in high‑resolution 3D with a level of precision never before recorded.