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

A huge railroad museum with over 100 pieces of rolling stock focusing on the railroad history of Pennsylvania.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

An abandoned town is hidden in Great Smoky Mountains National Park.

Once part of a dam servicing an early 19th century grist mill, the tucked-way falls are a tricky-to-find urban oasis.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

The trials and tribulations of marking Poe’s grave.

It’s not hard to see why the historic Peabody Conservatory of Music’s library has been described as a “cathedral of books.”

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.

The man who first patented the Ouija board rests in peace beneath a headstone that playfully reflects that achievement.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

An abandoned 1920s school with a mysterious history.

An abandoned coal mine reached by a steep hike.

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

This statue is dedicated to Grace Sherwood, the last person in Virginia to be convicted of being a witch.

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

Remnants of a storybook amusement park hidden behind a strip mall.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.