A medieval military street hidden beneath a charming French fishing village.

The deserted pirate-themed restaurant still entices explorers.

The world's most famous cheese caves.

The artist and his brother are buried in a landscape straight out of a van Gogh painting.

If they push on just the right spot, even the weakest person can move this titanic boulder.

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

The world's largest reflecting pool is just two centimeters deep.

This off-limits room in the National Library of France is home to a system of pneumatic tubes, once used to bring books to readers.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

Two small chapels housed inside an ancient tree.

A cave dwelling that was started by the Celts, expanded by monks, and finished by knights.

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

Perhaps the most beautiful of preserved saints, with a little help from Paris.

Beneath the city of Lourdes, France is a massive, concrete church.

An arresting arch punched straight through a mountain provides one of the most scenic spots, and challenging climbs, on the planet.

A darkly erotic open-air statuary in Catalonia.

A French valley with forests so lush it was nicknamed "the Small Amazonia of the Pyrenees."

Wonderland replication in progress by one persistent man.

This hanging crocodile is thought to be the "dragon" that once plagued a Czech city.

Europe's second largest ossuary wasn't discovered until 2001.

An old asylum graveyard that's been abandoned for half a century attracts those seeking a dark thrill.

One of the oldest, well-preserved water treatment facilities in all of Europe.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

Nine bronze hands protruding from a wall honor the student uprising that led to the fall of Czechoslovakia's Communist government.