An 18th-century Spanish watchtower made entirely of seashell and concrete.

The remnants of the fortress that saved Georgia from the Spanish still stand guard on their swampy island.

This boulder stays on its mountain thanks to a huge chain and on the map due to local legend.

Moonbows over Kentucky.

This small museum is kept in a house that was integral to the genesis of Uncle Tom's Cabin.

A 70,000-square-foot institution dedicated to a very literal, creationist perspective on the Book of Genesis.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

You thought Santa Claus didn't exist, but it turns out you were wrong.

The world's longest known cave system.

This grave marks the final resting place of a legendary frontiersman... unless it doesn't.

This huge clock made of flowers and simple machinery was once used a political weapon.

World's largest collection of Coke-related items not held by the Coca-Cola company.

The massive, original Colgate Clock is mounted on a defunct factory building that was once a prison.

This railroad overpass is said to be home to a murderous goat-man whose very legend has led to very real deaths.

A life-sized memorial to Harry L. Collins, the official corporate magician of Frito-Lay.

The grave of the iconic Kentucky Fried Chicken mascot features a bust of the man behind the goatee.

The largest cemetery in Louisville is the final resting place of Col. Sanders and Muhammad Ali.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.