Gangnam-gu is a district situated in the south east of Seoul, one of the most affluent areas of Seoul, served by Seoul Subway Line 2, Seoul Subway Line 3, Seoul Subway Line 7 and the Bundang Line. Gangnam-gu houses several popular shopping and entertainment areas including Apgujeong, the COEX Mall, the hosts for many of events and fairs annually, and the area ... More>around Gangnam Station. Yangjae Stream, or Yangjae Cheon in Korean, is a 5.5km stream, stretches from Mt. Gwanak through the southern area of Gangnam-gu is available for swimming and ecosystem watching. Travel west for the vibrant Seocho-gu.