Near the ruins of a Civil War coastal fortress lies the only known African refugee cemetery in the United States.

The highway's southernmost spot is a beloved local attraction.

A monument celebrating the idea of reaching inaccessible places.

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

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

The first KFC is on the National Register of Historic Places.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

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

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

Moonbows over Kentucky.

An abandoned town is hidden in Great Smoky Mountains National Park.

This building contains handprints that are well over a century old.

An ode to "The Queen of Appalachia."

World's largest Christmas store.

This lighthouse and shipwreck museum keep a torch burning for the memory of the SS Edmund Fitzgerald.

Beautiful scenery, history, science, and physics come together in this remnant of shipping lore.

This lone tree and dramatic sandstone outcropping are so beloved by Michiganders they can be found on one of the state’s coins.

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.

Strange physical sensations and optical contradictions keep visitors coming back for more.

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

A popular place to pick up prehistoric coral fossils from the time when Michigan was an ocean.

Unique Michigan homes look like something out of Tolkien's "The Lord of the Rings."

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