One of the few working locomotive roundhouses in the United States.

This lovely public park has an intriguing past and unique wooden bridges made of concrete.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

The chiseled jaw of this forgotten American hero still stands tall in a small Indiana town.

A chapel built by Italian POWs during World War II tells a forgotten tale of the war on the home front.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

You thought Santa Claus didn't exist, but it turns out you were wrong.

A chilling disappearance (and rescue) of a child uncovers a geological mystery.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

Museum dedicated to the art of cutting and polishing stones.

The fifth-longest natural arch in the world, and the longest outside China.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

This memorial to the Mercury Seven astronaut stands at the site of his former elementary school.

Tucked in Mumbai’s wealthiest neighborhood is one of the city’s oldest and most sacred sites: a temple complex believed to house the waters of the Ganges.

An extraordinary "City of Caves" carved from solid stone.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.