In the Shawnee National Forest, amazing rock formations peer through the treeline.

Eclectic collection of rare and beautiful stones in a historic home.

The park that the Chicago Stockyards built.

Planes, trains, and automobiles have all been sunk as attractions at this Illinois diving spot.

This majestic tree has survived 400 years of storms, droughts, and floods, and is a beloved natural landmark in Missouri.

A geological oddity formed by two rivers carving out a mass of limestone on both sides.

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

The modest, restored home of the legendary ragtime musician John William "Blind" Boone.

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

This former Union fort commands a fine view of downtown Cape Girardeau and the Mississippi River.

This 1854 courthouse along the Mississippi River has a storied history.

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

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

One of the largest carillons in the world, this giant instrument has 67 cast-iron bells played by a keyboard.

In the loving memory of a tragically deceased role-player this Illinois park is decked out with both dungeons and dragons.

Twice a year, this road is closed off to allow for the migration of thousands of snakes, reptiles and amphibians between cliffs and a swamp.

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

In the St. Francois Mountains in the Ozarks at 1,772 feet above sea level, Taum Sauk Mountain is the highest (and possibly oldest) peak in Missouri.

Giant granite rocks standing end-to-end like a train of circus elephants.

Nestled in Onondaga State Park, over 100 canoes carefully stacked in a replica of the famous standing stones.

A subterranean haunt where wine and homemade biscottis are always on the menu.

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

Spanking machines, fake goats, and more devices of humiliation are on display in this museum of fraternal initiation devices.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.