I might find myself with a 1.5 day layover at D.C. Land at 5 am at Dulles on Saturday morning then depart early Sunday afternoon. About five years ago I toured the Air & Space Museum and thought that was fantastic. Looking forward to touring the museum next to Dulles on Sunday morning to see all the planes they have there. Give me some ideas on what to do Saturday around the Mall. No car and I will be spending the night at a Hampton Inn about 7 blocks from the National Archieves.