Off we go to the Grunewald and to its highest point at 115 metres: the Teufelsberg (devil's mountain), an elevation that was made from WWII debris and attracts walkers, mountain bikers and kite-flyers to the fresh open air in summer and cross-country skiers in the winter. The view is great, covering the area surrounding Berlin and it's city skyline. And this is very reason why this place was once a spy post. During the cold war, the Americans and the British used to position their listening devices here. Every now and again curious ones stumble into the dilapidated facility, even though it is prohibited and officiall cordoned-off.
It looks like the building permission expired here, as a considerable apartment and hotel complex was once in the works, along with David Lynch's aspirations for a university and meditation centre. Thankfully nothing became of these plans and the Teufelsberg remains wild mountain territory, apart from the local vineyard. Those who are searching for a green space to recharge their batteries should definitely do it here. A small tip: don't forget to bring your swimming gear, as you will pass by the Teufel lake on the way up the mountain. But if you do forget them, don't worry, as the naturist community also has a good presence.
Train: S9, S75 - Heerstraße