The Korean DMZ has historically been one of the most volatile political regions in the world.
Snaking across the width of the Korean peninsula, this wall creates a 160-mile-long, two-and-a-half-mile-wide buffer zone between North and South Korea. The DMZ was constructed along the 38th Parallel and is considered to be the most heavily militarized border in the entire world. Incidents and incursions continue along the DMZ, although recent peace talks have begun ever so slightly to depressurize the border. The two countries have agreed to allow families divided between Northern and Southern halves of the border to reunite in a rare effort at cohabitation. Such efforts do not erase recent episodes of landmine explosions, cross-boundary rocket fire, and propaganda radio broadcasts, however, but may ease tensions along the political powder keg that is the DMZ. Since the Korean conflict ended in 1953 in a truce, the state of war between Seoul and Pyongyang continues to validate the existence of the world’s most heavily guarded border. This wall stands as perhaps the most effective anti-migrant fortification in all of human history. It has kept the populations of two independent nations almost entirely secluded from one another for over six decades. (from: https://origins.osu.edu/connecting-history/top-ten-origins-walls?language_content_entity=en)