Mount Rushmore is a granite mountain a little more than a mile high, located in the Black Hills of South Dakota. The name comes from Charles E. Rushmore, a New York lawyer who went on a prospecting expedition to the area in 1885. He apparently did not think much of the Lakota name for the mountain, Six Grandfathers.
John Gutzon de la Mothe Borglum (or John Borglum) worked on turning Mount Rushmore into a memorial from 1927 to 1941. While technically never finished (the original plan was to show the presidents from head to waist), the memorial is now the top tourist attraction in South Dakota.
It is worth noting that Borglum was also a member of the Ku Klux Klan, and one of six Klan “knights” who served on the Imperial Koncilium. He was the designer of the Stone Mountain Confederate Memorial at Stone Mountain, Georgia, which was in part funded by the KKK. Due to disagreements with the workers and organizers of the memorial, he left the project.