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

It's a pretty creepy lock-up.

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

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

The final resting place of New Orleans' most famous voodoo priestess.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The stone sculpture of an Ottoman soldier is an homage to a lost Providence landmark.

An architectural statement of artistic intent smack in the middle of Providence, Rhode Island's Colonial uniformity.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

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

St. Augustine's record-setting narrow street was designed to protect against pirates.

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

The world's largest occupied bat houses hold hundreds of thousands of flying mammals.

Step back into the glory days of Florida's nascent tourism industry at this Gilded Age palace.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

The giant squid's 27-foot-long corpse lies preserved within a Sarasota aquarium.

A Circus legend leaves an unexpected endowment.