This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

This historic old movie house was the scene of one of the Blob's most iconic attacks.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The fastest transatlantic ocean liner sat abandoned in a Philadelphia shipyard for decades.

This elaborate towering structure was once famed for its revolutionary height.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

Yo, Adrian!

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

The first American department store, and home to the largest operating musical instrument in the world.

The world’s first penitentiary, meant to be humane, drove men insane.

This jail which was in service for over a century is now open for curious visitors.

A historic landmark and museum filled with curious objects representing the history of Key West.

The museum chronicling a treasure hunter's dream, fulfilled.

A small poultry graveyard in the courtyard of a popular Key West watering hole.

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

A monument celebrating the idea of reaching inaccessible places.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

Here’s how Robert the Doll earned his reputation as the most haunted doll in the world.

One woman's Viking Castle on Lake Tahoe.

This historic estate on the east shore of Lake Tahoe was home to an eccentric millionaire (and his pet elephant, Mingo).

More than a century after her death, Little Gracie Watson remains one of Savannah's most often-visited residents.