Take Line 4 or the Jungang Line (Munsan-Yongmun) to Ichon Station. Go out Exit 2, and walk 150m towards Yongsan Family Park.
※ Wheelchair accessibility : If your train is bound for Oido, the elevator is on the front side of the platform. If your train is bound for Danggogae, the elevator is on the rear side of the platform. Take the elevator up to the ticket office level, then take the elevator located at Museum Nadeulgil near Exit 1 & 2