What are some facts about the DMZ border between North and South Korea?

The border between North and South Korea is not only a reminder of the Cold War, but it is also one of South Korea’s most interesting tourist sites. The Demilitarized Zone (DMZ) is around 150 miles (240 km) long and 2.5 miles (4 km) wide. While it is heavily guarded with soldiers from both sides, it is also the perfect location for plants and animals to thrive. Due to its isolation, several endangered species can be found in the area, including reports of the rare Siberian tiger.