Tyler: It's boring.
Me: But there will be skeletons there!
(15 minutes later)
Tyler: Oh wow, cool! Look at those skeletons!
And the rest was pretty enjoyable to judging by his comments.
Museum was followed by a play in the park and lunch at the Cheeky Llama cafe.
And on a completely different note - the bigger boy in life may be a qualified chef, but that doesn't stop him having fun with my breakfast :)