Cryptic messages embedded in the New York City sidewalk.

A school teacher's massive and terrifying self-built castle.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

A park full of outsider art, created by college students studying outsider art.

This chicken coop pays homage to a classic architectural style made famous throughout the southern United States.

A museum dedicated to exhibiting remarkable outsider art.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

A cabin completely covered in coffee mugs, where visitors are welcome to leave one of their own—if they can find an empty nail.

A collection of relics from the Spiritualist Camp Chesterfield.

This whimsical park encourages its visitors and wildlife to roam on and around the various works of art.

A gregarious Ohio resident has been building his whimsical temple to peace for decades.

The church and nearby castle are all that remains of a medieval village, mysteriously abandoned.

This Funeral Hearse Museum represents the finest in cadaver transportation.

The jewel of the museum is a rare tumulus, a funeral decoration from the 18th century.

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

Fantastic collection celebrating the final send-off.

The spectacular collection of one of the world's best woodcarvers.