This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

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

The "last unrestored grand mansion of Savannah" is now a cramped, mouldering maze of antiques.

Ruins of a Carnegie family mansion on Cumberland Island.

A bizarre roadside attraction and the first instance of miniature golf in the world.

An early-19th-century hotel with a past that is steeped in the Civil War.

This kitschy tavern is also home to rare early editions of "Treasure Island."

Disney World's very first waterpark is now an abandoned ruin being reclaimed by the swamp.

Mariners once used this prehistoric landfill as a navigational landmark.

The sign that drew attention to a young boy's cucumber stand is now the name of his fruit superstore.

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

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

This isolated airport in the middle of the Everglades sees more alligators than planes.

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

A historic presidential getaway on the continental United States' southernmost island.

Leave it to Key West to drop a real-live drag queen instead of a ball to mark the arrival of the New Year.

"We Seceded Where Others Failed."

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

The birthplace of American international flight service has been turned into a celebrity's microbrewery.

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