In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

Try not to get slimed in Tribeca.

World's first "penitentiary," meant to be humane, drove men insane.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

A tribute to Ponce de Leon's supposed quest for eternal youth.

It's a pretty creepy lock-up.

Just like the real 36th president of the United States, animatronic LBJ amuses visitors with jokes and stories.

One part antique store, one part curiosities hodge-podge.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

This headstone marks the grave of an 11-year-old boy killed during clashes in the streets over the boycotting of British goods.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

Giant granite rocks standing end-to-end like a train of circus elephants.

Erosion and time have created a naturally-formed water park.

This life-size bronze statue remembers the tallest recorded human in his Illinois hometown.

A mythical bird etched into the face of a rock doubles as the mascot for a nearby school.

Less a museum than a bizarre fantasy world created by artists and engineers.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

A chessmaster's dream destination.

This is not your typical jungle gym.