Walk in the footsteps of the gods and straddle two tectonic plates.

Climb right into the heart of this colorful Iceland volcano.

A winding, blood-red tunnel of hardened lava navigable by foot.

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

A macabre farm reserved part of its 222-acres for dead bodies, all in the name of science.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

A remarkable time capsule of American manufacturing deep in Maryland coal country.

This former fire tower found new life as a communications hub complete with a scenic overlook.

This maze-like slot canyon is a unique gem within an already fascinating geological area.

The world's largest fully steerable radio telescope.

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

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

An abandoned 1920s school with a mysterious history.

This abandoned amusement park was built on a site with a dark history.

This abandoned school has had many lives since the early 1900s, and all of them doomed.

Paranormal investigators claim this abandoned asylum is the most haunted spot in the eastern U.S.

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

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

An out-of-place Air Force radar dome is all that denotes this park as a former missile launch site.

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

This Virginia railway overpass is said to be haunted by a serial killer in a rabbit costume.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

After hundreds of years of settlement, this once-bustling fishing village sunk into the Chesapeake Bay.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.