It was elevated to city status in 1986 and is home to a South Korean naval base and a large concentration of United States troops.

Invoking eminent domain, the government obtained the surrounding land for the base expansion.

The ROK/US agreement allows USFK to move to one centralized location away from the congestion of Seoul and its surrounding areas.

This relocation agreement results in returning two-thirds of the land currently used by the United States Military back to the South Korean government.

The Korean War Monument of the South African Air Force was opened on 29 September 1975 by the Ministry of National Defense of the Republic of Korea in memory of the 37 South African Air Force members who served during the Korean War.