The world's longest known cave system.

In the Shawnee National Forest, amazing rock formations peer through the treeline.

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

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 poet’s boyhood home is now dedicated to celebrating his life and legacy.

One of the largest carillons in the world, this giant instrument has 67 cast-iron bells played by a keyboard.

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

The world's largest collection of the world's largest objects is in one small Illinois town.

You were once able to challenge a chicken to tic-tac-toe at this park, which is now converted into the Aikman Wildlife Adventure.

The multinational Burger King chain is banned from operating within 20 miles of a family restaurant filed under the same name.