We are back after a nice day of sightseeing on the trolleys. We just rode and listened to the narration and didn't get off to walk around at any of the stops. It was too hot & crowded and my feet are pretty shot by now. It was nice just to ride around and enjoy the breezes and the scenery. When the northern loop returned to the welcome center, we went across the street for some lunch and then took the loop around the National Mall and saw the memorials, Capitol, White House, etc. Again, just riding was fine. We got off near the White House and walked back to the hotel, picking up sandwiches for dinner later. We're in for the evening, I think.