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

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

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

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

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.

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

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

Former hotel turned into haunted playground.

A tribute to the twin ideals of religion and patriotism, built by a Catholic priest from rocks, glass, and innumerable found items.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

The farm toy capital of the world hosts a museum filled with toy tractors dating back to the late 1800s.

This Mediterranean castle was built for a millionaire and his giant dog.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

While there are no actual snakes in the history of this crooked road, there may be a number of dead horses.

An Iowa town celebrates its heritage with the tallest working Dutch windmill in North America.

An unlikely Transcendental Meditation haven in the American Heartland built around the ancient Vedic principles of balance and harmony.

A place of great reverence for Trekkies everywhere, a hero's future birthplace.

A warning to the weak-kneed: This narrow bridge does its swinging eight stories high.

No one knows the origin of this small town’s unique name.

Home with Gothic windows featured in a famous painting.