The remnants of a Gilded Age elegance preserved in the middle of a stark modern tower.

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

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Millions of numbers carved in glass represent the tattoos forced upon victims.

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

What may be Boston's finest Art Deco building, located in the city's Financial District.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

An enormous, inside-out glass globe built in 1935.

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

Must form and function forever remain at odds? Not if the Florida Department of Transportation has its way.

A graveyard of bathyspheres and diving bells paints a weirdly accurate account of ocean exploration's rickety history.

The story of a Floridian city as told through an obscure sport for retirees.

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

A gleaming white tower in ornate Indian style soars above the low-slung bungalows of north Tampa.

A lion given to the prime minister somehow got stuffed and sent to Florida.

Possibly the world's oldest rug, this Egyptian relic is woven entirely from ancient cat hair and once carried a mummified human foot.

It's a pretty creepy lock-up.

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

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

The only Florida state park with publicly accessible caves.

The graves in Florida's oldest Black cemeteries are marked with shells, stones, and mementos of the deceased.

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

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