One of the few surviving "Wigwam"-themed motels.

The world's longest known cave system.

Eight rare Corvettes are swallowed up by a sinkhole in Kentucky's National Corvette Museum.

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

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

A bizarre roadside attraction and the first instance of miniature golf in the world.

More than five miles of underground passageways.

This "Plant Farm Museum" is home to the divinely inspired and visionary outsider artwork of Reverend Howard Finster.

World's largest college campus includes a wildlife sanctuary and a former movie set on more than 28,000 acres.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

Public works and national defense project meant to carve a canal all the way across the state of Florida.

In Florida, these naughty monkeys live on their own mini-monkey Alcatraz.

Ruins of a Carnegie family mansion on Cumberland Island.

If all members were present at the table, a sixth of the world's wealth would be under the same roof.

Georgia's first brewery is also one of its oldest surviving buildings.

The remnants of the fortress that saved Georgia from the Spanish still stand guard on their swampy island.

Bad farming practices caused this unnatural natural wonder.

This folk art compound was built by a fortune teller on the advice of three people from the future.

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

These ancient ritual mounds are our best window into the culture of the ancient Mississippians.

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

A man's home is his castle.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.