Banpo Bridge, Seoul, South Korea.
Banpo Bridge Rainbow Fountain is the world’s longest bridge fountain. The fountain is programmed to play different shows during the day and night. During the day, the fountain shows a hundred different configurations meant to evoke waving willow branches and willow leaves. When the sun goes down, 200 lights illuminate the fountain as it sends up dancing, rainbow-colored jets of water in the air in synchronization with music.