See the White Sands National Monument Dunes
New Mexico, United States
Can you think of anything cooler than sand dunes made of crystals? Not only are the dunes of White Sands National Monument composed of gypsum crystals. They are also home to what scientists believe is the largest concentration of Pleistocene tracks in North America, meaning you are right at the heart of the ice age. With constantly shifting sands, who knows, maybe you will stumble across mammoth bones.