Which are good ones for a 4 year old and a 2 year old? Not worried about the 4 year old so much as he is interested in most things and I think would quite enjoy a trip to any of them. What I want to avoid is disgruntled looks from staff/other people visiting as the 2 year old charges about poking priceless exhibits shouting "daddy" randomly.
So - culture me. Where do I take them?!