Photo: User:Aude, CC BY-SA 3.0 via Wikimedia Commons
FBI Headquarters. This brutalist office building is in bad condition and will likely be demolished eventually.
The J. Edgar Hoover Building is a low-rise office building located at 935 Pennsylvania Avenue NW in Washington, D.C., in the United States. It is the headquarters of the Federal Bureau of Investigation (FBI).
© OpenStreetMap contributors
This is where John Wilkes Booth shot President Abraham Lincoln in 1865, and he was taken across the street to the Petersen House where he died. Ford's Theatre is not only a historic site, but remains a working theater, with regular performances. Theater here is usually the most traditional of the downtown venues, offering dramatic work that is "as eloquent, intelligent and respectful of humanity as Mr. Lincoln." The truly coveted tickets are for the annual Christmas Eve performance of A Christmas Carol. The daily tours take you through the theater and the onsite museum, and also spill across the street to the Petersen House, where Lincoln died.
A great museum detailing the life of Abraham Lincoln and the place where he was assassinated.
Petersen House
1865 was perhaps the most consequential year in presidential history, when, on the 14th of April, John Wilkes Booth, a prominent actor at Ford's Theatre and Confederate sympathizer shot President Lincoln in his balcony seat. Attendants carried Lincoln across the street to a small bedroom in the small row-house across the street, but the doctors were unable to save the president. He died early morning the next day. This isn't so much a museum—it's just a small room with a few plaques, recreated to look as it did on that day. The house is operated by the National Park Service, and visited via tours from Ford's Theatre.
D.C. can't get enough Shakespeare, to the extent that the Shakespeare Theatre Company had to open a second, enormous performance venue in 2007 at the Sidney Harman Hall. Both venues are great, the Lansburgh being a long-time favorite and a smaller, intimate space, and the Harman Hall being big, flashy, and state-of-the-art. The performances here of Shakespeare, often set in present times, as well as other classics from Aeschylus to Marlowe, are almost always universally-acclaimed and top-notch. If you want to see theater in D.C., this is a great place to start. If you are in D.C. in the early fall, enter the online lottery for "Free for All" tickets.
D.C.'s memorial to the U.S. Navy is not as jolting as the big memorials, but it is nice to walk around. Make sure to see the famous Lone Sailor statue, and who knew that Neil Armstrong was in the Navy!
The collection here is a walk through encyclopedia of American Art—Gilbert Stuart's stern presidential portraits through Nam June Paik's house-sized America sculpture of neon and televisions.