For hundreds of years, automatons moving to metallic music have been marking the passage of time.

The largest underground church in Europe.

Historic medieval fortified city in southwest France.

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

This natural French spring has been turned into a magical grotto by Roman and medieval constructions.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

One of the last umbrella repair shops in Paris upholds the nostalgic art of umbrella making.

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

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

One of the greatest maze designer’s greatest mazes.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

A museum of carnival attractions where you are invited to ride the rides.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

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

A curious collection of mechanical moving figures.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

On this stunning Scottish island, you can walk in the footsteps of dinosaurs.

Largest lake in Great Britain measured by surface area.

This cramped crevasse saw the entire population of its island suffocated inside its depths.

This Scottish bridge seems to compel dogs to leap to their death.

This series of Scottish caves has no clear purpose other than baffling historians.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.