Not one, not two, but three natural bridges remain in this captivating spot post-sinkhole.

A peace symbol in Northern Ireland is among the world's largest hedge mazes.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

The final resting place of soldiers' loyal canine companions.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

An idle pastime becomes a record holder in Boys Town, Nebraska.

This graffiti-covered bridge is the quintessential vision of a place for disillusioned youth to escape the complexities of burgeoning adulthood.

A hospital closed seemingly in the middle of operations, leaving behind fodder for horror films and ghost hunters.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

An architectural oddity of six stories, accessed by graceful ramps.

A spooky and decrepit mental health facility is slowly being replaced with newer digs.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

A museum of carnival attractions where you are invited to ride the rides.

Abandoned ship reimagined as a street art canvas.

This solitary gravestone is separated from the rest in Appleton, explaining why local legends continue to surround it.

Empty since 1989, now falling into ruin.

An abandoned asylum incorporated into a college campus.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

Collection of vintage trailers double as hotel rooms.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

Ain't no party like a ghost town party.