The DMZ (Korean Demilitarized Zone) is a strip of land running east to west along the 38th parallel separating North from South Korea. The border was created as a result of the Korean Armistice Agreement in 1953 and is widely known as the most militarized border in the world.
I took a tour a few years ago with the USO’s Koridoor program. Other tour groups offer trips to the DMZ but the USO’s program was more comprehensive. You begin at Camp Kim and travel by bus to Camp Bonifas where you’re briefed by a member of the US military. Then you’re transferred again by bus to the Joint Security Area (JSA).
The entire time you’re in the DMZ you have a member of the US military acting as your guide. They will explain each site along the DMZ including the Freedom House, Conference Room, Bridge of No Return, and the site of Operation Paul Bunyan in 1976. You also have the opportunity to walk (or crawl depending on how tall you are) through the 3rd tunnel, one of the four known tunnels created by the North that crosses the border between North and South Korea. One of the last stops on the tour is Dorasan Station which, up until 2008, was running materials over the border to the Kaesong Industrial Complex. It’s now somewhat of a ghost town with tourists from Seoul being its only visitors.
For more information:
USO: Koridoor Tours
Operation Paul Bunyan (Military.com)
Visit Korea: DMZ Overview
Visit Korea: Joint Security Area