Catch a ride through the Pennsylvania countryside on this historic narrow-gauge railroad.

A unique local art exhibit that has continued to grow since 1989.

A rocky shelter in the desert hides one of the largest concentrations of cave paintings in Mexico.

A mountain range on an active U.S. Navy base hides thousands of mysterious prehistoric rock carvings.

Some 10,000 works of ancient rock art cover these volcanic basalt outcrops near the Gila River.

Legends surround this jagged rock formation in the New Mexico desert.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Ute tour guides have been sharing the ancient dwellings and rock art inside this large park with visitors for more than 40 years.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

A spiritual vortex among the red rocks in Sedona.

This 24-acre park offers a place for meditation in the midst of Sedona's iconic red rocks.

An extraordinary mixture of natural beauty and man-made phenomena.

The first North American landing spot for James Cook on his third voyage of discovery in the Pacific.

The last water-powered mill in Oregon is open daily for free tours and has a surprising history.

100-year-old shipwreck you can walk up to at low tide.

A surreal landscape where fanged rocks rise from the ground and the ocean feels like a great mystery.

Now owned by the National Park Service, this location was once home to illegal boxing matches.

A collaborative art project that transformed a neighborhood in NYC's Queens.

A self-made museum in Queens, New York continues to display the work of a sculptor known for paving his own way.

Featuring the largest CinemaScope screen in Pennsylvania, this drive-in has entertained moviegoers for more than half a century.

Lines from a walking song are etched into a rock in Natural Bridge State Park.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

This collection of over 50 classic pinball machines awaits visitors to downtown Roanoke.