We will be driving to Washington DC from Philadelphia - starting out about 1pm. We're staying at the Americana in Arlington. We would like to spend the next day touring Arlington Cemetery, the monuments and perhaps one museum. I'd like advice on public transport for that day unless it's easy to use the car and park everywhere. The second day we thought we would drive to Mount Vernon in the morning and go to Alexandria for the afternoon. Would driving be best for that day? We also want to see the monuments by night - is driving/parking possible or are we best to take a tour? Are we missing something that we will regret later? The next day we move on, driving to Gettysburg - on to Pennsylvania. Washington is the first step in a 3 week driving holiday up to New England. We're coming from Australia and have never been to this part of the USA.