This boulder stays on its mountain thanks to a huge chain and on the map due to local legend.

This haunting tombstone comes complete with a heartbreaking story of love and loss.

The permanent home of Elektro, the celebrity automaton of the 1939 World's Fair.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

Four distinctly unique gardens commemorate the POWs who lost their lives during the Sandakan Death Marches of 1945.

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.

Crumbling remnants of what was once a booming town full of silver.

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 collection of grotesques lines the walls of this Italian villa.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

Two adjoining collections of 19th-20th century physics apparatuses and instruments.

A whimsical tower with a spiral staircase, inspired by the Space Age and the Möbius strip.

Abandoned ship reimagined as a street art canvas.

Ruins of a 10th century church tucked away deep in a botanical garden.

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

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

A famous burial ground with a history both grim and literary.

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

An abandoned asylum incorporated into a college campus.