An average of 33 million gallons of water pour out of the collapsed cave at the heart of this spherical spring.

These pink granite water slides are the result of millions of years of erosion.

A small museum dedicated to the whimsical tool that turns sugar cookies into works of art.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

This historic cliffside mansion uses a natural cave for air conditioning.

An unexpected but incredible collection of wildlife dioramas spanning rainforests, swamps, forests, and plains.

A big museum full of little worlds.

The maximum security facility was once thought to have "the bloodiest 47 acres in America."

The world's largest collection of fine-scale miniatures and one the nation's largest collections of antique toys.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

This mosaic-covered bar is brimming with curated curios.

Curious cave that stays a cool 56 degrees all year long.

Community bookshelf of 25-foot-tall book spines.

This abandoned prison castle has become an imposing gallery of graffiti art.