A thick blanket of snow covered the whole area, rendering the car useless as it slid down the hill into the parking space. We would have to walk 800m up the hill into the forest, and what a lovely walk indeed. An eerie environment with barbed wire and a high impenetrable fence keeping visitors from breaking in. But worry not, keep on walking until, pay the small fee of 8 euro and enter a different world.
My second tip, besides ditching the car: Shout as loud as possible as you enter the dome structures on the very top. The effect is ridiculous.
This Old Radio Station, Teufelsberg, should be high on your Berlin to do list.
Anyway I will not bore you with words, as the pictures say a thousand of them…