I visited DC in April 2005 and got both driving and subway connections to a number of DC sights.
The more personal images are below; there's also a page of more public touristy images.
While in DC, I started reading The Bowl is Already Broken, a novel that deepened my experience of Washington, especially the Mall museums. I can recommend the author's Web site, too: Mary Kay Zuravleff.
For more about my DC host and her Washington world, visit Pat's Poetry and Prose and Pat's Paintings: Art by Patricia E. Ortman.