If you are afraid of heights, go somewhere else. If you wish to conquer that fear, this place will…read moredo it. Oslo Sommerpark features mountain biking, high ropes courses, and ziplining. I only had a chance to do the last two. I have done ropes courses many times through team building exercises, and I ziplined through the jungles of Costa Rica last year. There is one VERY significant difference between those experiences and Oslo Sommerpark... no rest for the weary. Every other ropes course would have a challenge station, where you would go up, complete the challenge, and come down. Then you would walk to another station. Same thing for ziplining in Costa Rica. You would go to one or two stations, scream your head off, then hike to the next one. Not in Oslo. Here you could have as many as ten different challenges in one go before you ever see a way to get down. Plus, you are self belayed with a magnetic system, so you are really on your own. (There is someone monitoring a few challenges at a time, but there doesn't seem to be a way for them to get you short of an emergency). If after five of these things you are tired of balancing on wires and just want to take a break, too bad so sad... keep going. That being said, it is a lot of fun. I was there with my team from work, and it was certainly a chance to unwind while climbing in the trees. I definitely recommend it, but you WILL finish what you start.