This stone memorial pays tribute to a massive shipwreck which was sadly overshadowed by the death of John Wilkes Booth.

This building contains handprints that are well over a century old.

Mysterious library of an infamous financier and spiritual seeker.

Founded in 1925, this folk school attracts students from across the country and preserves traditional Appalachian art.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

One man’s religious convictions led him to build this stone castle meant to withstand an apocalypse.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

The only zoo where you can buy animals that won't need feeding.

A historic dam made famous for its turbines and feature in a Hollywood classic.

This hotel was used during the Manhattan Project to house official visitors.

John Hendrix predicted the creation of the "Secret City" built as part of the Manhattan Project.

Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

One of the Cemestos prefab homes built to secretly house thousands of Manhattan Project workers.

The secret city built by the Manhattan Project.

This former maximum-security prison is creepy, sobering, and supposedly haunted.

This mansion turned restaurant was once a pitstop for Al Capone during his travels.

The mysterious 855-foot zigzagging stone wall has been baffling people for centuries.

This stone incorrectly marks the 35th parallel, causing some territorial kerfuffles.

This large cave is a summer home to thousands of bats and has a rich history dating back to prehistoric times.

One man has spent decades faithfully constructing this unique brick and cinderblock castle.

This museum pays tribute to the Cherokee leader who created a written language for his people.

These early tent-shaped grave coverings are unique to Appalachia.