Devils Tower was made famous in Steven Spielberg's film "Close Encounters of the Third Kind".
Description by McMaster_de:
The nearly vertical monolith known as Devils Tower rises 1,267 feet above the meandering Belle Fourche River. Once hidden below the earth's surface, erosion has stripped away the softer rock layers revealing Devils Tower.
Monument Valley is located in Navajo indians' land in Arizona, just next to the border with Utah. It was made famous by the many movies filmed there - more specifically the westerns of John Ford.