Reuters Pictures
Tourists descend beside a military barbed wire fence at Imjingak pavilion near the Demilitarized Zone (DMZ) separating the two Koreas in Paju, about 52 km (32 miles) north of Seoul, November 9, 2009. As a united Germany marks the 20th anniversary of the Berlin Wall's fall on Monday, about 1 million soldiers face off across the Cold War's last great divide -- the DMZ separating the two Koreas.