Children's Museums in Seoul

[DuringDinnerMints]

We're passing through Seoul for a few days at Easter and would like to include a museum while we're there. Can anyone recommend one for kids ages 8 and 11?

So far we're thinking of;
Incheon
Children's museum of the national museum of Korea
Sewerage Museum
Seoul Children's Museum

Our days of children centred activities are long gone (DS now lives in Seoul) so I can't give you specific children friendly advice but despite the blocky modern outside I LOVE the National Museum of Korea, I find the galleries to be beautifully curated - even the dusty old pots. I would assume the Children's museum is equally good but can see you would need to book in advance.

Are you organsied for other tips, activities, accommodation and ideas for food?