The sculpture, which famously depicts four former US Presidents as 60-foot granite faces, was constructed between 1927 and 1941 under the direction of architect Gutzon Borglum. Everybody knows that.
NBA legend Shaquille O'Neal recently shared his picks for fighters he believes should be honored on the UFC's Mount Rushmore.
Did you know Mount Rushmore has a hidden passage? Or that more faces were originally planned? Explore the forgotten history ...