Starfield Library COEX Mall - Seoul Korea (Walking Tour) 

Starfield COEX Mall (Korean: 스타필드 코엑스몰; formerly known as COEX Mall) is an underground shopping mall in Samseong-dong, Gangnam-gu Seoul, South Korea. The name "COEX" is derived from "Convention centers" and "EXhibition halls".
The mall is located near Samseong station on Seoul Subway Line 2, at the intersection of Teheranno and Yeongdong Dae-ro. The COEX Mall is adjacent to the COEX Convention & Exhibition Center, which is part of the COEX complex, run by the Korea International Trade Association (KITA). Millennium Square is the main exit of COEX Mall connecting with Line 2's Samseong Station.