An enormous natural sandstone bridge in Kentucky.

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

Even with its slightly risible name this colossal cross is still able to inspire awe.

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

The hometown of Popeye's creator is littered with a growing collection of granite cartoon characters.

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

Strange physical sensations and optical contradictions keep visitors coming back for more.

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

A Northwoods sporting competition that shows lumber jacks doing much more than cutting down trees.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

The palatial McDonald's that inspired Wesley Willis.

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

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

Nonprofit art center that promotes outsider, intuitive, and self-taught art.

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

Huge abstract sculptures of the Puerto Rican Flag.

A science teacher's dream.

The park that the Chicago Stockyards built.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.