Another of California's unused Cold War missile defense complexes has become a graffiti gallery.

A boulder carved into the shape of the cosmonaut's head.

The best-preserved Roman small town in North Africa.

Founded in 670, this ancient mosque is an architectural time portal.

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

A seemingly simple canyon that was the backdrop to a number of famous movies.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

The original film set of Luke Skywalker's Tatooine home from the 'Star Wars' trilogy.

Possibly the world's oldest rug, this Egyptian relic is woven entirely from ancient cat hair and once carried a mummified human foot.

The atmospheric road was never meant to be so creepy.

A clear blue swimming hole with hidden caves, still unexplored.

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

Tubing through a cave lit with glowworms is a magical underground experience.

The world's first commercial spaceport is a disappointment of cosmic proportions.

Home of the International Space Hall of Fame.

One of the deadliest American air disasters is nearly forgotten in Brooklyn.

Deadly airliner crash preserved for those willing to climb and pay respects.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

Mine your own precious stones.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

Abandoned power station once home to a squatter community, now being developed into an arts center.

The mass grave of a heroic Revolutionary War regiment sits below an empty lot near the Gowanus Canal.

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

Records of the dead describe the myriad odd ways people used to die.