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

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

Inside this wonderland of weird, visitors are treated to a collection ranging from skeletons to haunted artifacts.

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

A rusted metal giant pays tribute to Birmingham’s industrial past.

This space rock fragment is one of the only meteors to have ever struck a human.

One of the last active volcanoes on the Eastern seaboard.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

This abandoned train tunnel has been the subject of countless ghost stories for years.

You'll need cowboy boots to trek to this old-fashioned saloon nestled in a giant natural cave.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

148 feet long and in the middle of a verdant forest.

Hiding behind a grocery store is a spectacular cavern carved as part of an old limestone quarry.

Rare recess caves fill this unbelievably beautiful Ohio park.

A curious collection of oddities including a lock of Alexander Hamilton's hair and Harry Houdini's ouija board.

Where beautiful signs live on forever.

An abandoned relic of the city's failed experiment with below ground transit.

An abandoned asylum incorporated into a college campus.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

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

An exotic reptile facility showcasing some of the rarest, most venomous snakes in the world.

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

Take an otherworldly journey in a school dedicated to out-of-body experiences.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.