My thesis project zooms in on Masmo to the southwest of Stockholm. Specifically a subway exit, built on Masmo Mountain during the 1960s, but never finished. The site features a very unique location on the border between the quite urban Million Programme era architecture of central Masmo, and the completely untouched forest in the nature reserve right next to it, Gömmaren. For 60 years, the Masmo Mountain has been discussed in Huddinge municipality as a potential site for future construction, yet nothing has ever been constructed. I think this might be because of the challenges the location poses regarding how to merge an urban site with one that is completely undeveloped. These topics are examples of what this thesis project seeks to explore: What qualities are there that are worthy of preserving when dealing with architecture in precious environments? Is it possible to improve certain qualities of a natural site that are neglected in its current state, such as accessibility, or do all additions aggravate the essence of nature and make the site less exquisite? What sacrifices are necessary to make in order to provide high quality environments for the inhabitants, and do they conflict with the interests of visitors, or could they possibly coincide?