This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

Abandoned 18th century weapons factory in the Aezkoa Valley.

This narrow path was cut right into a French mountainside to feed the country's early naval expansion.

Pilgrimage site for star-crossed lovers.

Despite centuries of architectural innovation, this French castle is being built like it's the 13th century.

This church sits upon a peaceful hill and a long, turbulent history.

Swarms of dainty flying insects swarm into the Petaloudes Valley to get busy.

According to myth, Zeus himself was hidden in this cave to escape being eaten by his dad.

This little Greek plateau is home to thousands of rustic, white-sailed windmills.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

This abandoned Greek island was the last active leper colony in Europe.

This prison on the Maltese island of Gozo is almost 500 years old, and they have the graffiti to prove it.

The Jesus tree of Malta bears a striking resemblance to Christ on the cross.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

The fishing boats that moor in this small lagoon enter and leave through a tunnel to the sea.

This unique building in the main square stands out among the city's typically Baroque architecture.

Enigmatic tombs and cave dwellings on the outskirts of a rural village.

Overshadowed by other, more famous Maltese catacombs, this ancient burial chamber has one of the best examples of a ritual agape table.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.