Songdo
Songdo (Korean: 송도), officially known as Songdo International Business District (Songdo IBD), is a smart city built on 600 ha (1,500 acres) of an artificial island off the coast of Incheon's waterfront, 30 km (19 mi) southwest of Seoul, South Korea. It is connected to Incheon International Airport by a 12.3 km (7.6 mi) reinforced concrete highway bridge called Incheon Bridge.