Here are a few more of the DC area, taken from the National Cathedral.
The first and by far biggest: DC and several Northern Virginia skylines. Downtown DC takes up the left half, then progressing from left to right after the Potomac River you can see Crystal City, Pentagon City, Alexandria (distance), Rosslyn (foreground), Courthouse, Clarendon (foreground), Bailey's Crossroads (distance), and finally Ballston (at extreme right).
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This one shows DC's Cathedral Heights neighborhood in the foreground, with Clarendon (left) and Ballston (right) in the middle, and Bailey's Crossroads in the extreme back.
Here's the same picture, but zoomed out more so you can see Courthouse and part of Rosslyn as well:
You can also see several Maryland skylines from up there, but I don't have any pictures with more than one in the frame at a time.