Northern Ireland's Brobdingnagian stepping stones.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

A taste of the macabre Tokyo's ritzy shopping district.

A submerged archeological park still holds the wonders of a Roman Sodom.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

A massive underwater sinkhole made famous by Jacques Cousteau.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

Famously misunderstood wonder of the ancient world

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

A fiery crater has been burning in the Karakum Desert since 1971.

An Australian lake whose pink hue defies scientific explanation.

Rippling sand dunes frozen in the Arizona rock.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

On Japan's Tashirojima Island, cats are king.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

A 16th-century horror show built in a lovely Italian garden.

An ancient capital city that dates back 3,000 years old and harbors many surprises.