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

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

A warning to the weak-kneed: This narrow bridge does its swinging eight stories high.

A place of great reverence for Trekkies everywhere, a hero's future birthplace.

A mysteriously dark cemetery monument fuels stories and legends galore.

The oldest university museum west of the Mississippi retains its 19th century feel.

This 16-foot-diameter wooden coin has been standing in Iowa City since 2006.

One of just a few cities in the world to base their center of government on an island. Others: Paris and Osaka.

Step back in time while shopping inside this local store.

The only museum in the world dedicated to the history of sprint car racing, next to one of the country's most historic dirt tracks.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

The world's largest covered wagon is piloted by a giant Lincoln lawyer.

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

While he no longer has an eatery to give him context, this off-brand Paul Bunyan still holds his giant hot dog with pride.

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

The 30,000-volume library is one of the world's most impressive poetry collections.

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

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.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

Years of archaeology, just chillin' by the water cooler.

The only Bahá'í house of worship in North America and one of only a handful worldwide.