The Gocheok Sky Dome is a domed baseball stadium located in Gocheok-dong, Seoul, South Korea. It is the home ballpark for the Nexen Heroes. The stadium is primarily used for baseball and has a capacity for 17,000 spectators for baseball games. The stadium replaced Dongdaemun Baseball Stadium and opened on 15 September 2015. It also serves as a concert venue, with a capacity for around 22,000 spectators.