REN Building in Shanghai
The REN Building, a hotel, entertainment venue, and conference center for the 2010 World Expo in Shanghai, is among the craziest buildings on this list. It is a two-in-one structure that has entirely different uses. The first structure that appears out of the water is dedicated to physical activities and has a water culture center inside.
The conference center and meeting spaces are located in the second building, which rises from the ground and is dedicated to spirit and enlightenment. The Chinese character for “people” is formed when the two structures come together in a 1000-room hotel, serving as a recognizable landmark for the World Expo in China. Together, the two structures form both a tower and an arch.