The U.S. government built the million-pound stack of steel during the Space Race.

A memorial dedicated to a highly decorated Marine and Korean War veteran, who also happened to be a horse.

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

This sprawling farm was once a Cold War-era hideaway for the nation's top diplomats.

Hear, smell, see, taste, and touch history at this immersive Civil War hospital.

Every spring, locals see the shadowy figures of a ghost army of slain Greek soldiers descend upon this ruined fort.

This remarkable cave was discovered after a shepherd watched bees enter and exit through a small fissure.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.

The historic building has preserved human organs, unusual hexagrams, and scars from a political assassination.

A staircase made of gravestones leads up to this church built into a giant rock.

Cretean quarry suggests real-life site for ancient Greek myth of the man-eating Minotaur in his labyrinth.

According to myth, Zeus himself was hidden in this cave to escape being eaten by his dad.

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

This little Greek plateau is home to thousands of rustic, white-sailed windmills.

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