14 Must-See Spots in the US National Parks

One of the many geysers in Yellowstone's Upper Geyser Basin, this is the most famous of them all. No visit to the park would be complete without witnessing at least one of Old Faithful's eruptions. It may not be the largest in the park, but it is the most consistent. Bison and elk can be spotted grazing in the day while the Milky Way and glowing stars serve as a backdrop in the night.