A rare particle accelerator with a tremendous energy range is tucked away at Ohio University.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

The childhood home of one of Ohio's favorite sons, pilot and war hero Eddie Rickenbacker.

America's post-nuclear-attack chambers of Congress.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

The museum calls itself the "National Museum of the Paranormal" and is full of eerie oddities.

A slab of sandstone covered with mysterious 1,000-year-old rock carvings from a vanished North American culture.

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

The failure of one component toppled this entire bridge during rush hour.

A lost cemetery stands forgotten on a hilltop, known only to the older residents of Pomeroy.

The largest earthwork effigy in the world.

Rare recess caves fill this unbelievably beautiful Ohio park.

The largest ancient burial mound in Ohio.

The world's first aircraft factory has been hiding inside an automobile plant for almost 80 years.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

A real flying saucer, contracted by the U.S. Air Force.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.