This ancient Irish tower could easily have stood in for Rapunzel's prison.

Construction of Barcelona’s iconic (but controversial) church was finally 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.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

With a history of slaughter, feast, and famine, remnants of the pork industry decorate this area--even its church.

Indents in the pavement are all that remain from a grisly death machine in Paris.

This bridge was constructed from the rubble of the infamous Bastille.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

The famous winding walk at Chartres is surrounded in mystery and myth.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

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

A former waterfront market is now in the center of town due to some interesting Boston engineering.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Former villa and estate of James Deering developed to preserve native tropical forests.

Vacant Beaux-Arts buildings that serve as reminders of a beach town’s glory days.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.

An Irish Memorial commemorating those who perished due to potato blight.

Huge masonic hall in Philadelphia with lavishly themed rooms.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Currently housing a corporate bank branch this building at the southern tip of Manhattan was once the gateway to luxury vacationing.