This 140-year-old beacon off the Florida Keys marks the wreck of a Navy ship that once roamed the Caribbean hunting pirates.

The jewel of western Mexico's archaeological legacy is this tiered circular pyramid now covered in grass.

These two giant boulders mysteriously perched on a 60-foot cliff may have been slung up there by a raging tsunami.

This lush Florida island is home to the ruins of a crooked ship breaker's tiny empire.

The largest freshwater lake in the Florida Keys.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

A devastated ruin in the south of Belize where British explorers claimed to unearth the Mitchell-Hedges Crystal Skull.

Twenty-eight years after this local landmark was washed ashore by hurricane Hugo, it was washed away by hurricane Irma.

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

Oldest unrestored plantation house in America that is open to the public.

This recently rediscovered Civil War-era submarine was the first to ever sink an enemy ship.

This titanic steel chain linking two buildings was installed without permission but instantly beloved.

The world's largest fire hydrant is supposedly tornado-proof.

This psychedelic tromp l'oeil seems to be beckoning drivers to crash into a wall.

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

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

A monument celebrating the idea of reaching inaccessible places.

"We Seceded Where Others Failed."

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

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

A building so large that it has its own weather.

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

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

A haunted hill that supposedly defied gravity.