A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

Bad farming practices caused this unnatural natural wonder.

Moonbows over Kentucky.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

The only diamond mine in the world where you can keep what you find.

Meet manatees face-to-face at this zoo for native species.

A local prank turned town icon.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

You have to love a museum with a truly dedicated focus. A focus on Superman, for example.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

Oversized statues are just the tip of this nostalgic Americana roadside attraction.

This bright yellow building is packed with sweet treats from all around the world, from chocolate-covered crickets to whoopie pies.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

An outlandish shoe shaped house built by an eccentric millionaire.

An oversized metal construction of Billy Tripp's moods going through life.

Rabbit Hash is a heaping slice of Americana from another era, with a very peculiar origin behind its unusual name.

A castle built by an eccentric medieval enthusiast in rural Ohio.

The world's largest kaleidoscope, designed by a 1960s psychedelic artist.

An architecturally-focused antique shop.

An entire town preserved as a historic landmark.

The uniquely-designed winter home and sculpture studio of Anna and Archer Huntington.