50 Travel Destinations Every American Simply Must Visit In Their Lifetime

42. Mendenhall Glacier Caves – Alaska

Not everyone considers Alaska to be one of the places to visit in America. Nevertheless, there are many beautiful attractions located there. The glacier caves are one of them, with 12 miles of glacier for you to walk through. When the sunlight pours through the ceiling of the cave, you’ll get to experience a somewhat surreal light show of the likes you’ll never find anywhere else. Be sure to dress warm, though, as it’s pretty cold in there.