The greatest show on earth is the earth. And if you don’t believe that go to South Dakota to let the magical Black Hills, with their mysteriously dense wooded peaks and hiding waterfalls, convince you. And mountain-size faces of Mount Rushmore will amplify your awe. The latest edition to South Dakota’s great faces carved in rock, The Crazy Horse Memorial remains a work in progress after the death of sculptor Korczak Ziolkowski, but is open to the public throughout the year.