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

The magic's in the hole!

Home to drunken tower-climbing goats... seriously.

New York City's smallest piece of private property.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

A layered tribute to the work of mosaicist Isaiah Zagar.

Arlington Cemetery exhibit dedicated to death and grieving.

A gargantuan crystal kingdom.

A museum of unusual collections, mini-towns, and a half-dog, half-alligator.

A private collection of massive steel monsters guarding a Texas pipe works.

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

The final resting place of New Orleans' most famous voodoo priestess.

Site of a former hidden treehouse in New Orleans.