We have built a deck floor in between three trees. This made a perfect location for a tree house as well as for accessing the spiral slide. A friend of mine helped me fix it against the frame we built ourselves. If you have not purchased an already built tower and you are making a tree house from scratch like we did, you will need to be a little creative on how to fix it and stabilize it. The kids could not wait for us to get it done. We just finished it and bought additional accessories for everyone's pleasure. Parents and kids! We are so happy we could find a 7ft tall slide.