Tryvann summerpark The summerpark is one of Scandinavia’s largest and most beautiful climbing parks, with 150 elements in the trees divided into 9 different trails of varying difficulty levels. The park offers something for the whole family – from mini-trails to trails up to 20 metres above the ground. You can also challenge yourself with one of the climbing park’s numerous ziplines. Tryvann winterpark The winterpark is Oslo’s largest ski resort, with 18 runs and 11 lifts. If you wish to visit the winter park late in the day, it is illuminated five evenings a week. This winter resort has something for everyone – from easier runs in the beginner area to more challenging runs for more experienced skiers. Lysebu’s guests can purchase ski passes at the hotel’s reception desk.