There are two legends behind the origin of this unusually tall sanitary structure.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

This museum houses a large collection of old motorcycles.

This former maximum-security prison is creepy, sobering, and supposedly haunted.

This candy shop has been serving up sweets to the Louisville area since the 1850s.

This mysterious hill seems to pull objects uphill.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

"X" marks the spot of an echo chamber in the middle of a plaza.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

According to the legend, this strikingly beautiful hill has miraculous healing powers.

A place to eat for on-the-run agents and espionage enthusiasts.

This cave holds a surprisingly colorful variety of geological oddities.

To find the "unicorns of the deep" you've got to go downstairs.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

These pretty kitties killed and ate as many as 135 railway workers.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A display of magnificent stained glass windows is the first exhibit of its kind.

Less a museum than a bizarre fantasy world created by artists and engineers.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

This historic lavatory leftover features two levels of defecation stations completely without context.

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

The first declared National Monument in the United States.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.