My girlfriend and I went here for the better part of a day, and while nobody in Oslo knew how to get there by transit (I think the system was under construction at the time), it was still worth it in spite of the headache it gave us to get there. We packed a nice picnic, including some beer, [Whoops, that’s illegal!] and I recommend you do the same. Then wander around and appreciate just how large this park is, and how interesting all the sculptures are.