A mysterious artist-run cabinet of curiosities and library.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

A subterranean playground in an abandoned slate mine.

Fighting the British and making game shows for over 150 years.

Less a museum than a bizarre fantasy world created by artists and engineers.

This outsider art house has gone from clinical creation to astounding artwork.

It's hard to believe the dizzying patterns covering this abandoned mine are completely natural.

From Iggy Pop to David Bowie to Nick Cave, this regal music studio has served some of the all time greats.

Floating swimming pool within a moored vessel.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

This professional clown's home is an outsider art wonderland.

Nondescript elevator doors open to reveal a stunning, surreal world.

A 16th-century horror show built in a lovely Italian garden.

Two monstrous faces loom over a village in Czechia.

An art world insider finds himself battling for his artistic home.

A surrealist timepiece by the artist of melting clocks.

A former milk-delivery driver and his wife turn their home into a glimmering mosaic.

700 iron sculptures crammed into a Mediterranean park.

A surreal museum of extraordinary industrial objects.

Unique house covered in a nightmarish mural of demons, ghosts and monsters.

Micro-nation based around a nine-story high illegally built tower.

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

Grottoes, sculptures, and recycled ceramics permeate what was once just a small farm in France.