We will be arriving in Baltimore (BWI airport) and would like to take a few hour sightseeing tour of Baltimore before heading to Washington D.C. (don't know what hotel yet in Washington). Thinking of doing the bus/trolley sightseeing tours which will tour us around the city and I believe by Edgar Allan Poe's grave (which I understand is near Lexington St Market). We definitely want to spend some time at the grave. Does anyone know if the bus tour stops here, or just drives by. Also, is this area safe? And if we just took a taxi from the airport to this area, can we easily get another back to Washington D.C.? Also, how far is Baltimore airport (BWI?) or the downtown area from Washington D.C. main area? We may decide to go straight to a D.C. hotel and travel to Baltimore. Sorry for all the questions...never been to Washington or Baltimore.