More than five miles of underground passageways.

The secret city built by the Manhattan Project.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

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

Visit this playground of waterfalls, caves and sinkholes.

An exotic reptile facility showcasing some of the rarest, most venomous snakes in the world.

Wander through more than 20,000 square feet filled with an amazing collection of orchids.

You can find America's highest suspension footbridge at Grandfather Mountain in North Carolina.

Step past the gas pumps and into a fine French bistro.

Founded in 1925, this folk school attracts students from across the country and preserves traditional Appalachian art.

This Asheville chair museum wants to revive a dying art.

The fine fabric handwoven at Biltmore Industries was once coveted around the world.

From golden eagles to peregrine falcons, this rehabilitation and education center is a haven for birds of prey.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

The world's largest vertical wind tunnel.

A historic dam made famous for its turbines and feature in a Hollywood classic.

Art Deco urban decay at this historical building.

This roadside attraction has been serving out its fair share of hearty folklore and chaos since 1858.

This stunning home looks like it belongs in medieval Europe, not North Carolina.

A wonderful display of arts and crafts handmade by local artisans in the Southern Appalachians.

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

Ruins of an American Civil War iron forge still survive today.

A piece of outsider public art accompanied by a strange urban legend.