Dongtan (Korean: 동탄) is a township in Hwaseong, Gyeonggi, South Korea, with many shops and restaurants. There are also 4 residential skyscrapers of 70-80 floors. They are collectively called Metapolis and contain a shopping mall. Dongtan also has the Suseo–Pyeongtaek high-speed railway (SRT) that goes from Suseo station to Jije station. The subway is 52.3 km (32.5 mi) long as the third longest in the world. It also has the longest tunnel for a subway that goes at a speed of 300 km/h (190 mph).