Come out of exit 2 at Gwangnaru station (line 5) and you will see a crosswalk immediately in front of you. Cross over and follow the road to the left. AxKorea is behind the youth center (청소년수련관) building. It's about a 5 minute walk from the station. Come out of exit 2 at Gangbyeon station (Line 2) and take the village bus (#01 - going to Gwangjin) from outside Technomart. Get off at Gwangnaru Hyundai Apartment.
AX Korea is one of the largest venues in Seoul. It regularly hosts the biggest acts from Korea and abroad.