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

Incredible miniature towns and buildings created and decorated with thousands of tiny rocks.

Crumbling ruins mark the site of a couple's grisly murder in the woods.

It may look like no more than a full-scale model, but every part of this full Space Shuttle stack had a working role in aviation history.

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

What else would you call a playground hidden in Alabama's oldest and largest cemetery?

One person's lost luggage is another person's treasure.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

The secret city built by the Manhattan Project.

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

Mysterious library of an infamous financier and spiritual seeker.

The first full-scale tunnel built in America is short but scenic.

Home of an evil witch famous within southern folklore.

The site of the one of the most deadly train wrecks in American history.

This replica of the Greek structure is in the heart of Nashville.

The world's longest known cave system.