The facade of this 16th-century building is decorated with carvings of 300 seashells.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

A centuries-old complex of hand-dug stone chambers has sheltered locals in times of trouble.

Two awe-inspiring globes from the reign of the Sun King hang from the ceiling of France's national library.

The history of radiation is on safe display at the foot of a radiation science laboratory.

Walk through spectacular aisles of hanging meat and wagon wheel–sized cheese at the world's largest wholesale food market.

A French artist's vague warning hangs over Belleville.

The mental institution where Van Gogh created some of his most famous work now allows guests to walk in the artist's footsteps.

A series of abstract, silly sculptures represent the works of a great modern classical composer.