An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

An eerie, little-known Neapolitan museum filled with preserved human remains.

This artificial cave looks like something out of a fairytale.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

This doorless 20th-century elevator doesn't stop or slow down.

The largest cactus farm in Africa.

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

Regency-era excess on the English Coast.

This neon landmark has been posing this deadpan question to follicly-challenged Dubliners for over 50 years.

This former farm In northern Iceland is now a museum, where visitors can tour beautifully-preserved turf houses.

This tiny, tranquil Senegalese island serves as a powerful symbol of the Atlantic slave trade.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

Catering to broken dolls for almost 200 years, this repair shop is now a charnel house of doll parts.

An aeronautical-themed resort forged around rusty relics from the golden age of air travel.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.