The largest ancient burial mound in Ohio.

A fitting attraction for the corn capital of the world.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

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

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

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

The maximum security facility was once thought to have "the bloodiest 47 acres in America."

You have to love a museum with a truly dedicated focus. A focus on Superman, for example.

The first rural cemetery west of the Mississippi is home to the elaborate tombs of St. Louis' local beer barons.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

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.

One of few surviving standpipe water towers in the U.S.

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.

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

Now nearly abandoned, Kaskaskia was once the capital of Illinois and one of the most important towns on the upper Mississippi.

Over a dozen Native American earth mounds dating back over 2,000 years dot this Tennessee archaeological park.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

These ancient ritual mounds are our best window into the culture of the ancient Mississippians.

The only road through the heart of Glacier National Park.

New fungal and bacterial species call this deadly lake home.

An adorably sweet display of sculpted Precious Moments figurines.