A huge flee market that occures two times a year, once in spring the other in the fall. Take the subway to Solna centrum and take the 3 min walk to the big sports arena where the fleemarket is held. There is lots of retro and vintage and a good potential of finding bargains.
Close to the water this park has animals, swings, climbing frames and playhouse. I place for families to play with there kids, but in the evening the area is occupied by teenagers.