The air force base preserves its scars from the Japanese attack on Pearl Harbor.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

On top of Gibbet Hill lie the ruins of a lavish turn-of-the-century estate that never quite came to be.

Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

A beautiful Victorian-era cemetery, complete with a miniature village.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Mining town from the late 1890s, once home to Calamity Jane.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

This dazzlingly turquoise mountain lake was created in the wake of a natural disaster.

Travel through the wholesome amusements of yesteryear at this charming miniature village.

This two-room shotgun shack in Tupelo is the birthplace of a King.

First LEED-certified gas station in the United States.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

This famous archeological mystery may be an ancient example of movable type.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.