Meridian Hill Park (Malcolm X Park)
http://www.nps.gov/mehi/index.htm
Busboys & Poets at 14th and V
http://www.busboysandpoets.com/about/14th-v
The Yard at Howard University (called the Upper Quad on this map)
http://www.howard.edu/explore/map/Ho...p14_141003.pdf
Those are my DC nontraditional sites.