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

An abandoned asylum incorporated into a college campus.

The remains of a massive blast furnace in what was once one of the country's largest iron-producing regions.

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

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

Acres of English cottage gardens, unexpectedly nestled in a Cleveland suburb.

Remnants of 19th century vigilante justice.

In the Mound Hill Cemetery resides the final resting place of the world's tallest couple.

An office built to look like a giant basket.

Francis Julius LeMoyne built this crematory in 1876; he was the third person to be cremated here.

This colorful West Virginia cowboy greets passersby with a glassy stare.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

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

This stuffed pigeon of war had the very serious name "John Silver" until he lost a leg in battle.

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

What is it about mushrooms that makes people wish they lived inside of them?

A free park where visitors can learn about and collect 440 million-year-old fossils.

This tower-tomb honors a president who only held office for a little over a month but dedicated his life to his country.

A former nuclear facility during the Cold War turned nature preserve.

Inside, ancient treasures. Outside, modern contradictions.

A memorial for an outsider theorist who believed that the planet is actually hollow.

This moving cemetery sphere is a slowly rolling stone.

How did a former First Lady's tiara wind up being sold to a pawn shop on reality TV?

This former tuberculosis treatment facility now stands at the center of a public park.