The longest navigable underground river in the United States is home to countless blind and albino animals.

Urban explorers embraced America's now demolished first suburban mall, south of Chicago.

Despite its name, this fast food museum is actually a replica of the ninth McDonald's store.

What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

The remnants of Peoria's proud baseball past stand slightly abandoned, but not forgotten.

One of two identical monuments marking the sites of military training encampments in Peoria, Illinois.

This rare female version of the Muffler Man has its clothes removed each summer to signal the start of pool season.

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

Arguably the best example of an authentic Dutch windmill in the United States, rivaling its counterparts in the Netherlands.

This abandoned 19th century orphanage started as a boarding school for children of Civil War veterans.

The 40-year-old machine serves soda quicker than you can catch it for a mere 75 cents a pop.

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

A replica viking ship from the Chicago World's Fair is still in dry dock in an Illinois park.

The face of a woman pushes its way through the earth.

What may be America's largest classic video game arcade lurks inconspicuously in a Chicago suburb.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

The only remaining Cold War–era Minuteman II missile control center in Missouri.

This majestic tree has survived 400 years of storms, droughts, and floods, and is a beloved natural landmark in Missouri.

The world's largest collection of fine-scale miniatures and one the nation's largest collections of antique toys.

Curious cave that stays a cool 56 degrees all year long.

The famous 102-year-old circus elephant was struck and killed by lightning.

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

A small town garden is dedicated to a psychic dog with the most soulful eyes.

The Grand Ole Opry's big voice came from a small home in rural Virginia where she was eventually buried.