A geological bull's-eye visible from outer space.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

A pub that is literally in the middle of nowhere, but continues to do business.

Commemoration of a sea voyage gone mysteriously wrong.

The little house that stood up to a disastrous flood has become a symbol of perseverance.

An abandoned town centered around a paper mill powered by a large waterfall.

The Mysterious Witch Bonney, a haunted statue in an old industrial city.

This lava formation earned its whimsical name from the log-like formation of it stones.

This rocky spread has been squeezed up directly from the bowels of the earth.

A building so large that it has its own weather.

Manatees congregate around a power plant's discharge canal where the water is especially warm.

Florida castle built with aluminum printing plates.

The hidden jewel of Disneyland: a members only playground for the Disney elite.

A world-class observatory in the California desert.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

Eco-friendly island mansion.

Secluded amid upstate New York’s Adirondack Mountains lies this subterranean emblem of a nation on the brink of nuclear war. And it's for sale.