Innovative urban construction in the central Chinese city of Chongqing aimed to find a solution to the massive traffic jams in city of 8.2 million people by building a road across the roof of a four-storey building. Located in the city's Nan'an District, the two-lane rooftop road runs atop numerous businesses and a major car park. It even features a line of trees, which make the drive look almost identical to the one on the ground. The noise is allegedly not a problem for the residents living in the five-storey building because no one lives directly underneath the road.