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

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

This museum dedicated to an oft-overlooked support industry features a surprisingly moving brass diorama of a man being saved from a sinking car.

Visit this playground of waterfalls, caves and sinkholes.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

Enormous lake at the bottom of a unique cave system.

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

The world's longest known cave system.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

World's largest Christmas store.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

This shallow cave got its name from copious amount of human bones found inside.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

One of the largest crucifixes in the world stands 55 feet tall in a secluded, wooded area of northern Michigan.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

Former self-sufficient mental institution now a planned community.

This massive roadside mascot was the first version of the giant to illustrate his butt.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

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

A failed utopian experiment for British expats in the American South is now a Victorian village frozen in time.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

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

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.