South Dakota’s Mt Rushmore was sculpted into the side of a mountain in the late 1930s. The national landmark features the heads of four former American presidents: George Washington, Thomas Jefferson, Theodore Roosevelt and Abraham Lincoln. Each one of the heads is 60 feet tall! The sculptures were originally going to be even taller, featuring each of the men down to their waists — but budget issues limited the extent of the carving. Find out more about Mount Rushmore National Memorial here.