Mount Rushmore is a monument located in South Dakota featuring the carved faces of four US presidents - George Washington, Thomas Jefferson, Theodore Roosevelt, and Abraham Lincoln. The faces were carved into the mountain between 1927 and 1941, requiring the use of dynamite to remove unwanted rock. Over 2 million people visit the monument each year to view the 60-foot tall carved faces and learn about the history of the monument at its on-site museums and exhibits.