The 3rd tunnel was discovered on October 17, 1978. It is located 52km from Seoul. It was estimated to take approximately an hour for 10,000 soldiers to arrive Seoul through the tunnel. When this tunnel was first discovered, North Koreans insisted it was made by South Koreans in a plot to invade North Korea. However, this theory proved eventually to be false. Structure of 3rd Tunnel is 1,635 meter-long, 1.95 meters high and 2.1 meters wide, penetrates 435 meters South of Military Demarcation line at a point only 4 kilometers South of the Truce Village of Panmunjom.

Situated in Paju(Gyeonggi-do) and at the northernmost point of the Military Demarcation Line of the Western front, Dora observatory replaced the previous Songaksan Observation post which is located closely. From the observatory visitors can overlook North Korea and it’s various locations including Gaesung, Songaksan, Kim Il Sung Statue and Cooperation farm(Geumnamgol). The Observatory has 500 seats VIP rooms and parking space. It was opened to the public in January 1987.

Dorasan station, a railway station on the Gyeongui Line, is the northernmost stop of South Korea railway line. Located 56km away from Seoul and 205km away from Pyeongyang. The station was opened as tourist attraction on April 4 2002, right before the 2002 Korean-Japan World Cup. Dorasan station can be reached by getting on the Gyeongui Line from Seoul Station.

Imjingak, located 7km away from Southern boundary of De militarized zone, is now the forefront of tourism related to the Korean conflict. It was built in 1972 with the hope that unification would be possible at someday. Three-storied Imjingak building is surrounded by several Monuments, Unification park and North Korea Center. Outside Imjingak, there are Steam locomotive used by military personals or equipments during Korean War and Freedom bridge used by exchanging prisoners of Korean War. Mangbaedan, which stands opposite of Imjingak, is famous for the place where people from North Korea visit and perform ancestral rites by bowing towards their hometown every Seolnal, New Year Day and Chuseok, Thanksgiving day.