1 / 3   A 72-meter-high spiral overpass in Chongqing has left many Chinese in awe. It is the highest such bridge in China. /Photo via CCTV

2 / 3   The Sujiaba bridge is designed as a loop structure with a very smooth radius, making people feel like they are driving up into the air on a roller coaster. /Photo via CCTV

3 / 3   As a mountainous city in southwest China, Chongqing has some 200 overpasses to ease traffic pressure, with many being quite complicated but impressive. /Photo via CCTV