There are two, one in Oittaa and one in Leppävaara. We’ve only been to the one in Leppävaara. I am not a huge fan of the Angry birds but have to admit the playground is worth going to with kids: The climbing frame has “lifts”, small boards kids can stand on and get a ride down. There is a rope climbing frame that is a carousel at the same time etc. Also, it has a skate park right next to, great for skooting and skating, pretty good footpaths for inline skates close by, and it is right next to the indoor and outdoor swimming pools. There’ll be something for everyone to do.