This device was crucial to the Industrial Revolution development of Leeds.

Winner of the Leeds Award for Architecture and the Environment.

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

Statue of death tucked in the University of Medicine courtyard.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

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

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

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Notorious artist squat renovated into legal studios.

This 12th century, partially destroyed, abbey has had several owners and was seized during the French Revolution.

One of the most historical literary characters continues to stroll his hometown.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

Enormous, fluffy dogs frolic around this museum dedicated to a legendary Saint Bernard.

Britain's only herd of free-ranging reindeer.

This ruined 15th-century hermitage is steeped in myth and mystery.