A monument to the center of the North American continent may be off by a few miles.

The world's largest version of this iconic puzzle cube is located in Knoxville, Tennessee.

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

Prayers and messages of hope decorate the ceramic tiles of this pavilion.

Prolific outsider artist Sid Boyum's concrete sculptures add whimsy to Madison's Schenk-Atwood neighborhood.

The city of Rockford, Illinois is symbolically protected by a quartet of fittingly stony sentinels.

This monolithic statue was erected in honor of Chief Black Hawk (even if it wasn't made to look like him).

This folk art wall claims to be the world's one and only memorial to the bygone age of hippies.

Part of a worldwide art project, this mysterious semicircle of concrete shapes holds the pieces of a larger story.

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.

Symbolic attempt to overcome the issues of life.

Patrick Dougherty's fantastic living tree sculptures, mind-blowing but temporary.

Colorful collection of antique musical oddities.

One man's vision and a labor of love of many.

Dinosaurs invade a suburban Nashville neighborhood.

A former 19th-century tavern, famous for its peach brandy and honey concoction.

A local scoured more than 1,000 acres for stone to create his masterpiece.

The site of the one of the most deadly train wrecks in American history.

The alley connecting two of country music’s most historic venues has a rich history of its own.

This popular park is home to a sea serpent sculpture that now overshadows the twisted history of its creation.

It may take some time to locate, but it's sure to warm even a heart of stone.

The small cave that housed Tennessee's "first citizen."

One Confederate statue that accurately reflects the ugliness of its subject.

A heartwarming message to those entering and departing Music City from above.