What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

One man's vision and a labor of love of many.

The overgrown remains of one of the premier auto-racing speedways in the Midwest—and also one of the most deadly.

The first spinning jail built in the United States is the only one that still turns.

Enjoy classic musicals with a home-cooked meal at this former staple of American social life.

A small rural town hides Indiana's tallest waterfall.

One of Indiana's only natural sandstone arches is nestled between resort ruins and an old Boy Scouts camp.

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

Even with only two residents and one building, this tiny Illinois town is famous for its burgers.

A 35-foot-tall fork stuck in the ground outside an office building in Missouri.

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

Where the author wrote her beloved "Little House" books.

Two columns and a path leading into the woods at Fort Bennett Park are all that remain of a custom-built, Bavarian-inspired castle

European castle ruins in an American state park are actually the product of death and grief.

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

Entombed in this strange, white stone hill are the deadly remains of radioactive weapons production.

This wooded grove of beautiful hand-built stone grottos is a hidden gem within a shuttered Franciscan monastery.

More than 12,000 years ago, this park was a playground for mastodons.

A frog crossed this road, but whether it made it to the other side remains a mystery.

A collection of soda memorabilia that spans decades.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.