The world’s first penitentiary, meant to be humane, drove men insane.

This historic old movie house was the scene of one of the Blob's most iconic attacks.

The oldest farmer's market in America is so ancient it was approved by the King of England.

A local prank turned town icon.

A train station that was abandoned by the coal industry and converted into a cocktail bar. Now it’s home to the local visitor bureau.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

The last street in Pittsburgh that's paved with wood.

An ode to "The Queen of Appalachia."

Before TV meteorologists, there were weather kiosks. This may be the last one in the United States.

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

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.

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

The Midwestern United States' tribute to Michelangelo is a foam statue sprayed with gaudy gold paint.

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

Bad farming practices caused this unnatural natural wonder.

This 19th century mansion façade adorned with immigrant patriotism is a symbol of Louisville’s history.

An equine tribute in a charming Southern city that calls itself "The Horse Capital of the World."

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

The ruins of a resort and casino sit on the banks of this blue hole spring that pumps 70,000 gallons of warm, clear water every minute.

Dedicated to the "King of Soul."

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.