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

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

This mill has survived a tumultuous past to still produce flour and cornmeal.

You can dig up your own crystals in the quartz capital of the world.

People of the Plum Bayou culture built these enormous mounds over 1,000 years ago.

The highest waterfall between the Rockies and the Appalachian Mountains.

A short boardwalk through a swamp leads to the spot from which the Louisiana Purchase was surveyed.

The seventh largest spring in the world.

Life-size figures portray depot attendants, train crew, and passengers frozen in time at the oldest railroad station in Arkansas.

The scant remains of an expansive indigenous civilization can be seen at this Arkansas state park.

A large stone map of Arkansas awaits visitors to its highest point.

An outsider art studio that created a piece of work so popular they had to turn mainstream.

A popular swimming hole that hides one of America's most deadly diving spots.

Known as one of America's most beautiful public restrooms.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

A tunnel with windows, so you don't miss out on the impressive views.

California's first suspension bridge.

Hidden inside a gift shop that doubles as a museum, this gargantuan yo-yo can only be operated by crane.

This roadside stop between Goblin Valley and the Henry Mountains is the perfect location to view some of the region's natural wonders.

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

Despite a recent paint job, the factory still sits empty.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

Rising out of miles of farmland, these buttes are sometimes called the world's smallest mountain range.

Belly up to the bar in Cowtown, don't forget to buy some boots.