One of America's most striking natural wonders is Antelope Canyon, which is part of the Navajo Nation's Tribal Park in Arizona. Stunning light beams streaming down seem almost other-worldly, and the slot canyon's undulating rock formations make it a must-visit American destination.

Antelope Canyon

Maryland's only oceanfront park is located on Assateague Island, a barrier island in the Atlantic with calm, secluded beaches for lounging and surfing as well as proximity to rugged nature. Part of Assateague State Park in Maryland, the island is perhaps most famous for its wild horses, which wander through the park's campsites and beaches.

Assateague Island

When most people think of Death Valley, it's actually Badwater Basin, the lowest point in North America, that they're envisioning. An out-of-this-world landscape, Badwater Basin is a salt flat left behind by evaporated salt water, and it's a must-see when visiting Death Valley National Park in California.

Badwater Basin

The water of Blackwater Falls is more brown than black, but that doesn't make it any less of an impressive sight. Colored by the acid from tree needles and hemlock sprigs that fall in the water, the more than 50-foot falls in Blackwater Falls State Park can be seen from several viewing platforms and are one of the most photographed natural sights in West Virginia.

Blackwater Falls

Also known as the Hall of Giants, the Big Room is the largest chamber of the Carlsbad Caverns National Park cave system in New Mexico. Longer than six football fields with 250-foot-high ceilings, entertainer Will Rogers once described it as "the Grand Canyon with a roof over it."

The Big Room