This famous monument carved into the granite face of Mount Rushmore is found in the Midwest, in South Dakota. It represents four of the past Presidents of the United-States: George Washington, Thomas Jefferson, Theodore Roosevelt and Abraham Lincoln. Each sculpture is 18m high. The memorial, at an altitude of 1,745m, attracts more than two million tourists per year. You can also visit the Sculptor's Studio, where the tools used in the carving are on display.