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

Some 2,000 carvings show this rare desert spring has been an oasis for travelers for over a thousand years.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

A Prada store in the West Texas desert that is never open for business.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

The Grand Canyon of Texas.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This monster fiberglass crustacean stands watch over the self-proclaimed "lobster capital of the world."

Twice a day, the water of the Petitcodiac River flows upstream in a surfable wave.

A display of magnificent stained glass windows is the first exhibit of its kind.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

1513 Turkish world map, full of European state secrets and snarky commentary.

A section of the long chain that blocked enemy ships from entering Constantinople.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

Single runway interrupted by a busy road that cuts across its middle.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.