Here's everything we did, with some pictures:
Nationals vs. Braves game (we surprised Josh with tickets, he is a Braves fan)
Philadelphia: Independence Hall, Liberty Hall, Betsy Ross House, Christ Church, Benjamin Franklin's grave, Philadelphia Musuem of Art (& the famous Rocky steps), philly cheesesteak (this is not just a meal, it's an event)International Spy Museum
World War II Memorial
Arlington National Cemetery
JFK 's grave & the eternal flame (& Robert E Lee's house, in the background)
Tomb of the Unknown Soldier
Old Town Alexandria
Bureau of Engraving & Printing (where they make money)
Smithsonian Castle & The National Museum of Natural History
White House (tour!)
National Archives (where the Declaration & Constitution are)
We also tried to go in Ford Theater & The American History Museum but they were closed... we will see them next time!
It was definitely the busiest vacation we have ever been on! But we had a lot of fun with Zac & Cara & everything we saw was so cool.