Visitors to this arboretum are greeted by three smiling giants crafted from sustainable materials.

The world's longest known cave system.

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

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

Despite its lavish ornamentation, and wholesome lifestyle of its devotees, this mountain commune has faced its share of issues.

An abandoned village that doubled as "The Hunger Games"' post-apocalyptic wasteland is up for grabs.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

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

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

Home of an evil witch famous within southern folklore.

Enormous lake at the bottom of a unique cave system.

This small exhibit explores the lives of Chang and Eng, the first known conjoined twins.

A maritime museum holding the remains of Blackbeard's pirate ship.

Beautiful Gothic-inspired lighthouse stands out among the run-of-the-mill striped fare on Bodies Island.

Perhaps the oldest vine in North America, this sprawling plant helps make a sweet wine.

One of the best places to see feral Colonial Spanish Mustangs in the United States.

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

Bigfoot prints, Feejee mermaids, and haunted dolls on display in a tiny North Carolina town.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

This museum sits on the site of a decommissioned military communications base.

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

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

A secretive collection featuring objects that were designed specifically for U.S. intelligence operations.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.