Mapo District (Mapo-gu) is a gu, or district, within Seoul, South Korea. It lies northwest of the Han River. Several universities and government buildings are located there. Mapo is well known for the Hongdae club district around Hongik University. Seoul Metropolitan Subway Line 2, Line 5 and Line 6 pass through this district. The Seoul World Cup Stadium, a famous landmark in Seoul, is located in Sangam town in northwest Mapo.