The Naval Support Facility Thurmont, popularly known as Camp David, is the rustic 125-acre (0.5 km²) mountain retreat of the President of the United States. Camp David is part of the Catoctin Mountain Park recreational area in Frederick County, Maryland, 60 miles north of Washington, D.C., about 20 miles southwest of Gettysburg, Pennsylvania and about 15 miles east of Hagerstown, Maryland. It was founded by President Franklin D. Roosevelt as Shangri-La and later renamed Camp David after Dwight Eisenhower's grandson, David Eisenhower.