The world's first and only natural nuclear reactor.

The true jewel of Africa's west coast known as "Africa's Last Eden."

It houses a menagerie of wondrous taxidermy specimens from around the world, including the remains of a famous gorilla.

A historic, reportedly haunted pub that provided inspiration for several famous adventure novels.

Banksy's image of a naked man dangling from the window of a sex health clinic.

Hidden just under the waters around this Turkish island are the ruins of a once great city.

At this ancient settlement at the foot of Mount Babadağ, honeycomb tombs are carved into a round cliff.

The largest refracting telescope in Europe is housed on the grounds of a former French castle.

Take black faced bears with giant clubs, white faced barbers wielding axes, hunters armed with shotguns, and mix in a lot of drinking.

A resort destroyed by a mysterious bombing offers visitors only its remains and the riddle behind it's demise.

This mural painted by Keith Haring was done without payment as a gift to entertain the children at the Hôpital Necker.

Once the hottest nightclub in France, Amnesia now lies in ruins after a 2000 bombing.

The world's largest solar furnace uses 10,000 mirrors to concentrate the sun's rays to generate power.

An image of the legendary saint stands in the shadow of a cathedral she liberated.

The haunting concrete remains of a Nazi pebble crusher can still be found in this small French commune.

This small red school was where Germany signed their surrender during WWII.

Longest canal tunnel in the world, abandoned in the 1960s.

A neighborhood church's unusual abstract stained glass was the final project of avant-garde artist Jean Cocteau.

This building’s ghostly exterior reflects its former lives as a prison, school, and funeral home.

The final resting place of the "father of special effects."

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

An ancient ossuary in Rouen.

A massive, secret marina for the Nazis' most formidable weapon in the Atlantic.

These crumbling Nazi artillery bunkers are now fair game for massive graffiti projects.