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

An 80-year-old house built out of newspapers.

Complex aquaponics systems allow fish and plants to grow in harmony.

House built with over 60,000 glass bottles.

Unique Michigan homes look like something out of Tolkien's "The Lord of the Rings."

Turnip-shaped island just off the Michigan shore in Lake Huron.

A village of art and exotic creations.

120 mortarless pagodas built by one Korean hermit.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

When the rain falls, this drain system turns into a musical instrument.

Remnants of a storybook amusement park hidden behind a strip mall.