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.

Bananas are often left for the first monkey America ever recovered alive after being launched into space.

A propulsion engine testbed that paved the way for the Space Shuttle launch sits without recognition at this rocket center.

This 19th-century hotel and spa hosted famous guests like like the Vanderbilt family, William Waldorf Astor, Helen Keller, and Jay Gould.

This limestone outcropping was once a ceremonial site for ancient Native Americans.

An ancient cave system in Tennessee’s Appalachian foothills converted to a 1,200-person music venue.

This abandoned nuclear cooling tower casts a shadow over a bucolic town.

This tiny 19th-century tunnel was built so a man could move his cows from one field to another.

Prehistoric animals decorate this popular outdoor park.

An abandoned theme park with a strange and tumultuous past.

Once one of the most polluted caves in America, now an environmental success story and a museum dedicated to caves.

A local scoured more than 1,000 acres for stone to create his masterpiece.

The world's longest known cave system.

A former 19th-century tavern, famous for its peach brandy and honey concoction.

This abandoned cemetery has a dark past of bodies buried over bodies.

A ceramic-tiled room at the Seelbach Hotel said to have secret tunnels used by Al Capone and a crowd that helped inspire F. Scott Fitzgerald's 'The Great Gatsby.'

Marine fossils from the Devonian period are exposed at this park.

Locals place their offerings on this nightmarish gnarled tree so the witches won't summon another storm.

This railroad overpass is said to be home to a murderous goat-man whose very legend has led to very real deaths.

Ruined pieces of stone and a swimming pool are all that remain of an amusement park swept away by a flood.

One man's vision and a labor of love of many.

Symbolic attempt to overcome the issues of life.

Part of a worldwide art project, this mysterious semicircle of concrete shapes holds the pieces of a larger story.

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.