These recently uncovered walls are all that's left of Washington, D.C's first defense contractor.

A celebrity from the late Cretaceous period.

A brass plaque dedicated to a convicted cannibal hangs in the National Press Club, and that's not even the craziest part of the story.

This leafy estate is worth $18 million and is so grand it has two mailing addresses.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

Disney's abandoned animal island is now an overgrown ruin that was almost the coolest attraction ever.

Home to items never before seen by the public.

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

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

A room in New York City that contains 250 cubic yards of dirt.

Vintage cars and motorcycles race for glory in a throwback motorsport celebration on the Jersey shore.

Rusting away on the edge of New Jersey are the remains of a Cold War missile launch site.

This tiny structure was built by the creator of the Brooklyn Bridge.

This scout retreat, still in use today, was the filming location for the original “Friday the 13th” film.

The site of one of history's most indelible and horrific tragedies.

Step into Monet's world at this fine-dining restaurant in the middle of a New Jersey sculpture park.

The most photographed house in Maine looks good enough to eat.