Namhansanseong (literally "South Han Mountain Fortress") is a major park and UNESCO World Heritage Site located at an elevation of 480m above sea level, immediately to the southeast of Seoul. It stands on the Namhansan ("South Han Mountain"), containing fortifications that date back to the 17th century, and a number of temples. It can be accessed easily from Seoul through Namhansanseong Station of Seoul Subway Line 8.