American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.

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

This bronze sculpture was inspired by a photograph of Martin Luther King Jr. and his wife embracing after he won the Nobel Peace Prize.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

A park where people have been going to feed friendly pigeons since the 18th century

This colorful gate stands as an entrance to the walled city of Old San Juan.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

The bat-covered home of one of the world's most popular brands of rum is located on a tropical Art Deco campus.

On a clear day, you can see all the way to the Virgin Islands from the top of this observation tower built in the 1960s.

The world's brightest bioluminescent bay.

On this Puerto Rican island, many abandoned naval ammunition bunkers sit open while a few have been padlocked by locals as personal storage.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

A remnant of the Franco-Prussian War, lodged in the city's walls.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

There has been an astronomical clock on this spot since the 14th century.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

A fearsome dragon clings to a corner of Munich's city hall.

Montmartre's sole surviving windmill became an iconic landmark for 19th-century painters, artists, and bohemians.

A cocktail lounge decorated like an American dive bar, in honor of the legendary author Ernest Hemingway.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Notorious artist squat renovated into legal studios.

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