Personal garden filled with mosaics made of recycled garbage.

This building’s ghostly exterior reflects its former lives as a prison, school, and funeral home.

An unusual number plate signifies the building's saucy past.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

An enchanting work of outsider art, full of whimsical sculptures and carvings.

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

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

Hundreds of hidden passageways weave through the old quarters of Lyon.

An iconic and eccentric bar for "Manouche" Jazz music keeps expanding its space—and its influence.

One of the greatest maze designer’s greatest mazes.

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

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

A surrealist timepiece by the artist of melting clocks.

France's national museum of scientific and industrial instruments.

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

Abandoned railway line circling the city of Paris.

This massive library holds what was once the largest book collection in the world.

France's most famous cemetery, with some of its most curious tombs.

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

A lovingly curated curio shop in which the taxidermy wear newspaper party hats, and peanut shells are spread across every surface.

An alien church provides much needed silence in the midst of a Finland shopping center.

Legend has this precariously placed rock was placed by giants. Science has another explanation.

Architecturally stunning library serves as the hub of Finnish scholarly life and culture.

A subterranean house of worship carved right out of the bedrock.