The first custom-designed building to showcase the works of Dale Chihuly is a wonderland of glass and light.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

Enormous lake at the bottom of a unique cave system.

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

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

The secret city built by the Manhattan Project.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

These early tent-shaped grave coverings are unique to Appalachia.

This mansion turned restaurant was once a pitstop for Al Capone during his travels.

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

This large cave is a summer home to thousands of bats and has a rich history dating back to prehistoric times.

The pan man stands as a testament to the functionality of American cast iron cookware.

Live long and prosper in Tennessee.

More than five miles of underground passageways.

This historic train station has been converted to a locomotive themed hotel.

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

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

This abstract roadside poultry was saved from demolition by outraged drivers and pilots.

Tour the sci-fi-esque reality of governmental disease management.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.

The house that Southern rock built now stands as a monument to one of the genre's favorite families.

A real (but thankfully not live) missile stands tall as a monument to the United States military in the small town of Cordele.

This 13-foot smiling peanut in Georgia helped Jimmy Carter win the 1976 presidential election.