At starting point of Chenggyecheon Stream is a plaza with a candle fountain illuminated by three-colored light, a circular firecracker fountain, and a two-tier fountain pumping 65,000 tons of water each day.
image source: http://www.panoramio.com/photo/29427351
Once the biggest bridge in the city, Gwangtonggyo Bridge was built in the 10th year of King Taejong (the 3rd king of the Joseon Dynasty) as a major thoroughfare for the royal family and ministers. As part of the Cheonggyecheon Stream Project, the bridge was restored and relocated about 150 m upstream from its original location.
source: Korea Travel Guide