Why have you never heard of the second most popular tourist site in New York?

A castle built for love, and abandoned due to heartbreak.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

The rough and tumble president's childhood home displays the shirt he was once shot in and the speech that saved him.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

Try not to get slimed in Tribeca.

Tucked in the back of this amazing antique store is an important piece of medical history.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

World-famous, Pink's still manages to keep its prized cult fetish status.

A humble plaque marks the site where the country music legend was found dead in his Cadillac.

A Civil War Museum with some notable medical antiques.

The Grand Ole Opry's big voice came from a small home in rural Virginia where she was eventually buried.

The oldest farmer's market in America is so ancient it was approved by the King of England.

The oldest continuously operating fish market in the United States.

The national park was once a plantation estate.

Hear, smell, see, taste, and touch history at this immersive Civil War hospital.

This war hero's old shop remembers the fine line between medicine and quackery during the Revolutionary War.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

The narrowest house in America is seven feet of pure spite.

This delicate museum is devoted to the art and industry that once supported Cape Cod's oldest town.

Artifacts of whaling, with both its perils and adventure, are housed in this museum in a former candle factory.

The birth home of one of cinema's legendary actresses.

New England's "Witches of Eastwick" locations, in all of their quaint white churched glory.