The Korean Demilitarized Zone (DMZ; Hangul: 한반도 비무장지대; Hanja: 韓半島非武裝地帶) is a strip of land running across theKorean Peninsula that serves as a buffer zone between North and South Korea. The DMZ is a de-factoborder barrier, which runs along the38th parallel north. The DMZ cuts the Korean Peninsula roughly in half, crossing the 38th parallel on an angle, with the west end of the DMZ lying south of the parallel and the east end lying north of it. It was created as part of the Korean Armistice Agreement between North Korea, the People’s Republic of China, and the United Nations Command forces in 1953.
It is 250 kilometres (160 miles) long, approximately 4 km (2.5 mi) wide and despite its name is the most heavily militarized border in the world.
Visiting the DMZ from Seoul can be done in a day, there is a lookout, a museum and you can catch an underground train through one of the discovered illegal tunnels built by the North.