An average of 33 million gallons of water pour out of the collapsed cave at the heart of this spherical spring.

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

One of the deepest springs in Missouri.

This simple gravestone remembers a pig who single-hoofedly raised $19,000,000 for the Navy.

This odd stone memorial remembers a loyal dog who offended the rail barons with his speed and saved his master with his pee.

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

Taxidermy, Cigar Store Indians, A Model of a New York Tenement and Delicious Draft Root Beer.

Over 600 vacuum cleaners stack the shelves of what may be the cleanest museum in America.

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.

Buy a token from the liquor store and you can make this beast spew flames on command.

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.

Rusted and decayed, this former mining site is a portal to the past.

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

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

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

This lagomorph-obsessed Route 66 emporium is home to a giant jackrabbit that sits in a bunny graveyard.

Oversized statues are just the tip of this nostalgic Americana roadside attraction.

This wooded grove of beautiful hand-built stone grottos is a hidden gem within a shuttered Franciscan monastery.

Who said a biker bar is no place for a taxidermy squirrel collection?

Entombed in this strange, white stone hill are the deadly remains of radioactive weapons production.

This former small town was destroyed not by the motor oil it sprayed the ground with but by the toxic waste that was added.