Tucked securely away in Catoctin Mountain Park near Thurmont, Maryland, Camp David has been the president's official country residence since Franklin Roosevelt converted it from a government camp in 1942. Every president since FDR has made use of the camp, either as a work-free reprieve from presidential life or to conduct official White House business. In 1978, President Jimmy Carter allowed Egyptian President Anwar El Sadat and Israli Prime Minister Menachem Begin to utilize Camp David as a neutral ground to negotiate a peace agreement between the two nations. They stayed for 13 days, drafting what became known as the Camp David Accords, which eventually led to the Israel-Egypt Peace Treaty of 1979. While the camp's exact location is undisclosed and shrouded in secrecy, many foreign dignitaries and special guests have received presidential invitations to visit the retreat, including Prince Charles, Margaret Thatcher and Vladimir Putin. There's even been a wedding: President George H.W. Bush's daughter, Dorothy, hosted her wedding to Bobby Koch at Camp David in 1992.