This grave marks the final resting place of a legendary frontiersman... unless it doesn't.

This huge clock made of flowers and simple machinery was once used a political weapon.

Outstanding collection of 19th century medical instruments includes a life-size figure cast from as many as 200 cadavers.

A local scoured more than 1,000 acres for stone to create his masterpiece.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

The remains of one of America's first radiation testing grounds still rest ominously in a Georgia forest.

Where school buses go to die and be reborn as whimsical works of art.

A mysterious inscription may hold a clue about the "Lost Colony" of Roanoke.

The remains of the iconic train crash from the movie The Fugitive can still be found rusting along the Great Smoky Railroad.

Inside a state forest, the forgotten remains of a Cold War defensive installation.

A beautiful oddities shop crammed with strange and morbid curiosities.

This was one of the first (and last) university-built and operated nuclear reactors.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

Holding the most bodies of any cemetery in the United States.

The site of the deadly Triangle Shirtwaist Factory Fire.

Salute the leader of the proletariat.

Commemorating the spot where the famous scientist fed his pigeons.

This otherwise innocuous bodega was once the headquarters of the most feared assassin's guild in American history.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

An annual extravaganza of Broadway theater memorabilia.

Unrepaired walls from a 1920 anarchist bomb attack.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

An oasis of calm amid the chaos of the boardwalk, the museum traces the heritage of this beloved beachside amusement park.