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

This curious headstone is labeled simply as "The Queen."

The lowest point in the state of Illinois, at the confluence of the Mississippi and Ohio rivers.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

Kentucky's anomalous peninsula projecting into the Mississippi River, site of legendary earthquakes and local feuds.

Despite what scientists think, the town still says this is an extraterrestrial rock.

The empty tomb that houses the memories of Roy Bertelli's revenge.

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

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

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

This zombie-themed restaurant stands out in the heart of corn country.

Dedicated to the humanitarian efforts of the state's former governor.

A unique work of outsider art sourced from scrap metals and signifies conservation.

A fascinating collection of art made from petrified wood and fossils by two octogenarian twin brothers.

Roaming bison and a spectacular view at the highest point in Nebraska.

One of the smallest towns in the United States.

Miraculous tree that seems to sprout out of solid rock.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

It is the only marker for one of the most famous hate crimes in American history. There are no other memorials for him in the entire state.

A ghost town that held steady longer than most, but finally gave up the ghost.

Thousands of years ago, Indigenous people painted images onto these canyon walls that are still on display today, provocative, mysterious, and enduring reminders of the people who lived here long ago.

For over a century, it has been a tradition to raise a flag at the top of this 450-foot sandstone pillar on the 4th of July.

It would be easy to walk past this unusual piece of art and have no idea it pays tribute to the odd life of a real chicken.

Within the former ghost town of Cisco is a carefully restored tiny town with one resident and its own art residency.