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

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

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

Erosion and time have created a naturally-formed water park.

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

The world's largest man-made underground caverns offer unparalleled underwater wonders.

This abandoned prison castle has become an imposing gallery of graffiti art.

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

This little gem of a museum is a hidden jewel filled with prehistoric treasures.

Over 600 acres of idyllic open grassland honor Nebraska’s georgic storyteller.

This Nebraska town wants to double its population with plywood cut-outs of townsfolk.

This was the first homestead registered after President Abraham Lincoln signed the Homestead Act into law.

Site of the 1879 Cheyenne Outbreak and the site where famed Sioux chief Crazy Horse met his fate.

America's largest man-made forest was planted in an effort to bring back the past.

A fascinating collection of art made from petrified wood and fossils by two octogenarian twin brothers.

America's smallest town is run by its single citizen/mayor/librarian/bartender.

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

An experimental, automotive replica of Stonehenge.

This three-dimensional brick mural is the longest of its kind in the United States.

This massive marble memorial was built bit by bit either out of devotion or spite, but at the expense of the surrounding town.

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

Why settle for barbecue chips when you can get actual barbecue?

A mysterious local has been dressing the child's grave for decades.