Display that gathers the basic elements of the universe in one convenient location.

Thousands of unique minerals, including some of the most impressive fluorite crystals in the world.

Moving, mind-blowing metal sculpture work of an outsider artist.

River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

An enormous natural sandstone bridge in Kentucky.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

A humble homemade ride attracts visitors from around the globe to this small Midwestern town.

In a grove of fast growing walnut trees outside Paris, Illinois, a marker shares the story of a fictional road building culture.

Like Stonehenge, but with boats and oodles more charm.

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

Part of a worldwide art project, this mysterious semicircle of concrete shapes holds the pieces of a larger story.

Eclectic collection of rare and beautiful stones in a historic home.