On the morning of 17 August 1786, Frederick died in an armchair in his study at Sanssouci, aged 74. He left instructions that he should be buried next to his greyhounds on the vineyard terrace, on the side of the "corps de logis" of Sanssouci. His nephew and successor Frederick William II instead ordered the body to be entombed next to his father in the Potsdam Garrison Church. Near the end of World War II, Hitler ordered Frederick's coffin, along with those of his father Frederick William I, World War I Field Marshal Paul von Hindenburg, and Hindenburg's wife Gertrud, to be hidden in a salt mine as protection from destruction. The United States Army relocated the remains to Marburg in 1946; in 1953, the coffins of Frederick and his father were moved to Burg Hohenzollern.