Namsan is a 494-meter peak in the heart of Gyeongju National Park, just south of Gyeongju, South Korea. The mountain is within easy reach from the city and attracts a large number of national tourists. Namsan covers an area of about 8 km (north-south) by 12 km (east-west). Some 180 peaks are counted, of which Geumobong (468 m) and Gouibong (495 m) are the best-known. There are about 40 valleys. Namsan is home to many historic and cultural remains, and is now part of the historic area around Gyeongju that was added to the UNESCO list of World Heritage in 2000.
Namsan is home to many remains from the Silla period, including some tombs of Silla rulers. There are hundreds of remains scattered around the mountain. Poseokjeong is one of the most famous of these sites, lying at the foot of Namsan. Other remains include Korean Buddhist art, sculptures, about 80 carved reliefs, about 60 stone pagodas and remains of about 100 temples and palaces mostly built between the 7th and 10th century. 12 of these relicts are designated national treasures.