On the side of a remote mountain, a stone face bearing an inscription of mysterious origin.

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

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

A bizarre house filled with an astounding array of collections.

Buildings from the fictional planet of Tatooine still litter the Tunisian desert.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

The centuries-old trees lining both sides of this dirt road may become Madagascar's first natural monument.

This abandoned Antarctic base sits nearly unchanged since it was forsaken in the 1950s, just waiting for you to visit.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

Mediterranean castle on a tiny Turkish island.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

Over 300 wood sculptures depicting characters from Slavic, Greek and Western folk tales fill this magical garden.

Another in a long tradition of legends regarding infernal seats.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

Walk in the footsteps of the gods and straddle two tectonic plates.

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.

King Ludwig I's collection of beautiful women.

This temple to the sturm and drang of Richard Wagner contains a dragon's cave and reptile zoo full of living "dragons."

Hidden well off the beaten path in Catalonia is this crumbling medieval castle that is slowly being covered in graffiti.

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

The antique barns in Cameron are not painted with your grandfather's Mail Pouch Tobacco murals.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

The shockingly unspoiled Peruvian tomb of the Lord of Sipan was once guarded by a footless warrior.