This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

One of the Cemestos prefab homes built to secretly house thousands of Manhattan Project workers.

This former maximum-security prison is creepy, sobering, and supposedly haunted.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

These ancient ritual mounds are our best window into the culture of the ancient Mississippians.

This museum pays tribute to the Cherokee leader who created a written language for his people.

This limestone outcropping was once a ceremonial site for ancient Native Americans.

This abstract roadside poultry was saved from demolition by outraged drivers and pilots.

The world's largest set of the ten commandments lay nestled in the heart of the Great Smoky Mountains.

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

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

The only diamond mine in the world where you can keep what you find.

A popular place to pick up prehistoric coral fossils from the time when Michigan was an ocean.

A subterranean world of tunnels links several buildings of this rare 19th-century asylum.

Step back in time on this preserved 1800s farm.

Live long and prosper in Tennessee.

The massive, original Colgate Clock is mounted on a defunct factory building that was once a prison.

The Midwestern United States' tribute to Michelangelo is a foam statue sprayed with gaudy gold paint.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

An abandoned theme park with a strange and tumultuous past.

Prehistoric animals decorate this popular outdoor park.

The first full-scale tunnel built in America is short but scenic.

This award-winning men's bathroom was just too beautiful to not allow women to see.

A propulsion engine testbed that paved the way for the Space Shuttle launch sits without recognition at this rocket center.