What is the Thing?

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

The world's longest known cave system.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Impossibly life-like natural history models created out of glass by a father and son.

See massive fossils that are over 200 million years old in northeastern Arizona.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

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

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

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

The site of the climactic scene from the classic horror film is now a historic landmark.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

At just six feet two inches deep, it is said by Guiness and Ripley to be the world’s narrowest freestanding office building.

One of Frank Lloyd Wright's final works was this UFO church.

A Lovecraftian altar of nightmarish bronze chairs sits ominously on a boardwalk in Puerto Vallarta.

An out-of-place slice of France, smack in the middle of Shanghai.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

The king of U.S. high points towers over every other peak on the continent.

The "Gateway to the Arctic" connects Barrow's indigenous population with the sea and its traditional industry: whaling.

Theme park featuring miniature replicas of European monuments.

A little sculpture with a large wardrobe.

The attic of a four-century-old canal house hides a clandestine church.

This short bridge is the only thing connecting a tiny Irish island to the mainland.