A wonderful museum. There are a lot of interesting interactive pieces (listen, watch, turn). I really liked the temporary exhibition "Indomitable Art". The museum has a very peaceful garden with birds, flowers and silence.
We were with a child, February 2020. A child is free, an adult is 14 euros. The first two floors are boring to fly, although there are a couple of interactive attractions. I was in the museum 10 years ago, I see that some of the exhibitions have been updated. But the third floor (workshop) is super for kids! You can touch everything there and participate in everything. I would have refused to climb on a horse as a child))))
On the ground floor there is a cafe, soup lunch 10.5 euros, pastries from 3 to 6 euros. Modest in general, but delicious! We had a good lunch and continued our inspection. This is one of my favorite museums in Finland. The Athenaeum is still an art gallery (there is nothing to do with a child there).