Had a blast at the National Infantry museum with my son, Gus, and wife.
If you have the time you should visit this place in Fort Benning Georgia. They have done some magnificent archetiural feats and gave my family and I some great space to run around out of the heat. We topped off the afternoon with a trip to The Fife and Drum for lunch.
We were planning on taking Grandpa but he was not up for the trip. Maybe next Dadurday!
Here they are on Facebook: http://www.facebook.com/nationalinfantrymuseum