We visited Plimouth Plantation yesterday - I was concerned that the kids were too young, but they really enjoyed it. Noah befriended (yes, big surprise) one of the actors, who taught him about muskets and fire-building, both of which are undoubtedly essential skills for a four-year-old boy.
We also went to see the Mayflower II. That's Jeff on the ladder!
Gabi and Noah were enlisted by one of the actors the empty the chamber pots onboard (they had water in them...I think). Apparently this used to be the responsibility of the youngest child in the house, so Noah enthusiatically volunteered.