The famous author's cottage hideaway.

Home on the Hillside, and home of the first breakfast cereal.

Once America's longest-manned military fort, now an abandoned hulk.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

A restaurant on Staten Island showcases a different grandmother’s cooking every night.

Everyone from Mark Twain to Teddy Roosevelt has a pipe hanging from the walls of this historic chophouse.

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

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

The loneliest island in New York.

A long abandoned hospital building on the outskirts of NYC.

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

A semi-scholarly approach to sex.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

Try not to get slimed in Tribeca.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

One of the best places in Florida to spot rare, carnivorous pitcher plants.

Charleston's historic city jail once held everyone from pirates to Civil War POWs.

The uniquely-designed winter home and sculpture studio of Anna and Archer Huntington.

This roadside attraction has been serving out its fair share of hearty folklore and chaos since 1858.

This now-deactivated naval base defended the Florida coast for centuries.