The United States's largest hand-dug well is topped with a state-of-the-art museum.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

A multiversal transit station located right below a highway interchange.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

These murals from the 1920s beautifully depict America’s industrial age.

One of few remaining antique carousels with stationary animals in the U.S.

The first graveyard named "Boot Hill" was established in Hays, Kansas, years before better known cemeteries with the same name.

Also known as the Cathedral of the Plains, this church holds the distinction of being one of the "8 Wonders of Kansas."

This tiny old water tower once doubled as a makeshift jail.

A 20-foot-tall egg painted in a traditional Czech patterns by the Czech community in Wilson, Kansas.

This historic railroad hotel built from Kansas limestone was once the most popular hotels for traveling salesmen in the midwest.

One of the oldest show caves in Arkansas.

The Bucyrus-Erie model 1850B electric shovel, or "Big Brutus," the largest existing electric shovel in the world.

This restored opera house is named after a soprano known for tragic romance, exile, and a truly uncomfortable wedding.

Few of the many visitors to this resort town know of its hidden Maya ruins.

From a canyon-like gorge, more than 20 million gallons of water emerge every day, while a smaller spring drips down, creating the illusion of an endless, gentle waterfall.

One of the deepest springs in Missouri.

An adorably sweet display of sculpted Precious Moments figurines.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

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

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

The show pony of cave systems, Fantastic Caverns manages to live up to its name.

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

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.