The privately owned cemetery that holds room for Washington's finest when they step down from life.

You could be standing at the site of one of D.C.'s most fatal tragedies and not even know it.

A haunting tribute to pioneering photographer Clover Adams.

This stately mansion, built in 1787 by America's first Secretary of the Navy, is rumored to be one of the most haunted buildings in Washington, DC.

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.

Government testing at the asylum briefly explored using marijuana as a "truth serum" on Nazi prisoners of war.

A Spiritualist house of worship where believers communicate with the dead in the spirit world.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

People escaping slavery may have hidden inside a corpse vault.

A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

This grand gothic brewery has been pumping out suds for over a hundred years.

The site of the climactic scene from the classic horror film is now a historic landmark.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

This unusual subway stop was originally a real estate office.

This beautiful Brooklyn monument over a crypt memorializes a grim and largely unknown story from the American Revolution.

On the hills of Bay Ridge stands a house straight out of a fairy tale.

Check out the underground party scene at the "Burning Man of Brooklyn."

No monkeying around, this fountain was really named after the classic sci-fi film.

A former connection to City Island, it has been abandoned since the 1930s.

Final resting place of Typhoid Mary.