What a cool old image of D.C. as seen from the air in 1918. Click on it for a larger version to see some incredible details.
Source: Library of Congress
Scroll down below to see some of the areas we highlighted for you.
Below is a view of Southeast near the Anacostia River.
This view below shows Union Station and the neighborhoods to the east.
And of course, below is a view of the Ellipse south of the White House.