General Grant National Memorial (as designated by the U.S. National Park Service), better known as Grant's Tomb, is a mausoleum containing the bodies of Ulysses S. Grant (1822-1885), an American Civil War General and the 18th President of the United States, and his wife, Julia Dent Grant (1826-1902). The tomb complex is a United States Presidential Memorial in the Morningside Heights neighborhood of Manhattan in New York City. The structure is situated in a prominent location in Riverside Park overlooking the Hudson River. The granite and marble structure was designed by architect John Duncan, and completed in 1897. The National Park Service maintains that it is the largest mausoleum in North America. Duncan took as his general model the eponymous structure, the tomb of Mausolus at Halicarnassus, or rather a modern execution of a conception of it.