This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

A local scoured more than 1,000 acres for stone to create his masterpiece.

Prehistoric animals decorate this popular outdoor park.

The world's longest known cave system.

Hiding behind a grocery store is a spectacular cavern carved as part of an old limestone quarry.

It may take some time to locate, but it's sure to warm even a heart of stone.

This replica of the Greek structure is in the heart of Nashville.

This defunct, fortress-like prison has been the setting for several movies.

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

The only pig museum in the U.S. holds one of the world's largest collections of pig items.

A gem in the small Missouri town where Winston Churchill coined the term "Iron Curtain" and effectively began the Cold War.

One man's unrequited love stands in a glass box forever.

This pristinely abandoned filling station on the edge of a graveyard is populated solely by unsettling mannequins.

A beloved, quirky little fountain featuring a large frog spitting water at a naked boy.

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

A sculpture of a giant man escaping from the depths of the Earth.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

A piece of John the Baptist in the American heartland.

A chessmaster's dream destination.

This historic motel standing at the "crossroads of America" offers a radio in every room and was saved by local protesters.

An urban forest overtakes what was the greatest failure of utopic urban housing.

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

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.