Passive activities for all ages, from simple swings to calisthenics and all kinds of track. I recommend you bring a few own things to maximize the fun - there are various ball game fields and all kinds of track, skaters will find some neat pits and rails to grind. Even the smallest kids can have fun here. Also, in the summer, you can take a quick dip in the fountain - bring a towel!
One of the best park for kids between Oslo and Drammen, very well done and maintained in the city centre, skate area, close to the water a lot of parking.
A very good place for families to enjoy outdoor activities together especially families with little ones under 10. Area includes public bathrooms, decent resturants close by, public transportation accessible. Public transportation is probably the best method to access this park.