Given Calder's interest in outer space, I've been meaning to take him to the the Udvar-Hazy Center (part of the National Air and Space Museum) for some time. We finally got our chance this past Friday. We met up with some friends and had a great time! The kids especially enjoyed the observation tower where they could watch the planes come in for a landing at nearby Dulles airport. And, the museum was nearly empty...which is perfect when you are chasing around little ones!
Calder also really enjoyed sitting inside a real airplane and learning some basic flying techniques. :)
And, of course, getting to see a real space shuttle was no let down either!