George Washington University Map: http://www.gwu.edu/~map/html/
PyCon 2003 will be held at at GWU's Cafritz Conference Center is located on the third floor of the Marvin Center (#30 on the map). The main entrance of The Marvin Center is located on 21st Street between H and I Streets.
Map of the Transit Station Neighborhood: http://www.stationmasters.com/System_Map/FOGGYBOT/foggybot.html