The walls of America's oldest masonry fort famously "swallowed" cannonballs.

The island residents are known for taking their quirky sense of humor with them to the grave.

Pensacola's UFO home has withstood many hurricanes—just as the experimental 1960s design intended.

Intertwined, interspecies trees which locals believe can grant boons to lovers.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

A monument celebrating the idea of reaching inaccessible places.

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

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

A tribute to Ponce de Leon's supposed quest for eternal youth.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

Electrical pylon in the shape of Disney's beloved mouse.

The home where a lovestruck Fitzgerald wrote his first published novel, "This Side of Paradise."

Where a brain, a beauty, a jock, a rebel, and a recluse met one Saturday and changed their lives forever.

An exhibit of items from the mental institution where Mary Todd Lincoln lived after her son conspired to have her committed.

Community bookshelf of 25-foot-tall book spines.

The notorious Wild West outlaw was raised in this unassuming abode.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

Where the author wrote her beloved "Little House" books.

Final resting place of a New Haven urban legend.