The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

This 700-year-old street food market features baby octopus and soy donuts.

A 70-foot-deep ice cave formed by lava from Mt. Fuji on the edge of Japan's "Suicide Forest." 

A shrine contains nearly 200 statues of the Buddhist deity Jizo, dressed in bibs by parents who have lost a child.

A remarkable lava formation encloses a line of Buddhist statues that can't be accurately counted, according to local mythology.

This ancient shrine has been rebuilt every 20 years since the eighth century.

Built over an abandoned train yard, this hidden gem is full of winding paths and offers gorgeous views of Sydney Harbour.

Come for the flowers, stay for the bats!

Though considered an eyesore by some, this boxy Brutalist high-rise plays a significant role in Sydney's past.

Three-story concrete ram with a permanent gift shop.

This abandoned Soviet circus is slowly being restored to its Communist-era glory.

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

One of the most poignant ruins of the Chernobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

Ripped apart by a bomb in 1993, the shell of Pablo Escobar's infamous vacation house still stands.

This neighborhood thoroughfare is haunted by dozens of homemade monsters.

Shrine dedicated to boars that is believed to cure foot and leg injuries.

1,001 carved statues of the Buddhist God of Mercy, each with a unique face.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

Not quite the menace it once was, this monster still has some chops.

Legend holds eating just one of these black eggs can add seven years to one's life.

The largest of the Fuji Five Lakes is home to an impressive swan population—some real, some with paddles, and one with an observation deck.