The deserted railroad town had a last gasp as a ghost town attraction before being abandoned for good.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

A rancher expanding a natural spring for his cattle came up with bones – lots and lots of them.

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

This large midwestern cavern features impressive rock formations and an underground waterfall.

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

Believe it or not, the now-ubiquitous California avocado originated in Guatemala.

This old residential building was once the largest flour mill in the world.

One of the world's premier laboratories for hydraulic engineering research takes full advantage of the water's power.

The only arched bridge made of stone on the entire Mississippi River.

When flour explodes, it's not a pretty sight.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

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 largest earthwork effigy in the world.

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

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

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

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

Millions of dollars worth of sculpture decorate this Iowa city center.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

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

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

The grave of the iconic Kentucky Fried Chicken mascot features a bust of the man behind the goatee.

The spectacular collection of one of the world's best woodcarvers.