Last day in DC

Today is our last day in Virginia and we are heading home after Bill gets out of class. He should finish up around 3 and we are aiming to get to Grove City, PA tonight. Yesterday we went to the National Zoo. All I can say about the zoo is that it is extremely hilly. It took us about 3 hours to walk the entire thing and we even skipped the pandas because the line was CRAZY. Jill, the kids and I went shopping a little in GeorgeTown, but the kids had enough and Bailey was throwing a major tantrum in Sephora. So we headed back to Jill's house. We had dinner there after Bill got out of class and then headed back to the monuments. We passed by the White House and that was about it.
Today I have to find something to do without Jill. I have no idea what because the kids are sick of shopping and looking at historical/government things.