Camp David in 1935 and was completed in 1938. In 1942, President Franklin D. Roosevelt converted it to a presidential retreat and renamed it "Shangri-La" (for the fictional Himalayan paradise in the 1933 novel "Lost Horizon" by British author James Hilton, which he had jokingly referenced as the source of the Doolittle Raid earlier that year). Camp David received its present name from Dwight D. Eisenhower, in honor of his father and grandson, both named David. The Catoctin Mountain Park does not indicate the location of Camp David on park maps due to privacy and security concerns, although it can be seen
Shangri-La cultural context for Hilton's story. Places like Sichuan and Tibet also claim the real Shangri-La was in its territory. In 2001, Tibet Autonomous Region put forward a proposal that the three regions optimise all Shangri-La tourism resources and promote them as one. After failed attempts to establish a China Shangri-la Ecological Tourism Zone in 2002 and 2003, government representatives of Sichuan and Yunnan provinces and Tibet Autonomous Region signed a declaration of co-operation in 2004. Also in 2001, Zhongdian County in northwestern Yunnan officially renamed itself Shangri-La County. American explorers Ted Vaill and Peter Klika visited the Muli area of