The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

A 2,000-year-old Adena burial mound located along a busy street in Columbus, Ohio.

A monument to a Native American leader who was known for never breaking a promise and met his end after signing a deal with white settlers.

An office built to look like a giant basket.

The largest earthwork effigy in the world.

How did a massive marine arthropod find its way to landlocked Ohio?

Now in disrepair, this 19th century station was a stop on of the famed B&O Railroad.

A miniature world of concrete and stone in Springfield, Ohio.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

The remains of an abandoned dinosaur theme park litter the woods just off the highway.

Small, privately owned island divided between Michigan and Ohio with abandoned vacation homes and a derelict lighthouse.

Ruined pieces of stone and a swimming pool are all that remain of an amusement park swept away by a flood.

This sprawling bookstore spans four floors and has more than a million books in stock.

Abandoned concert venue legendary for its rock counterculture.

A Beaux-Arts triumph rises from decades of decay to become the heart of a new innovation district

Inside the Wayne County airport is an amazing collection of lights and sounds.

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

Ghost stories surrounded this “castle,” the only structure from a huge mansion that was never built.

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

Rows of 19th-century brick ovens used to process coal into coke form the center of a wooded park.

There is beauty and history in the ruins of this former company town.

A castle built by an eccentric medieval enthusiast in suburban Ohio.