I can hear you
Teufelsberg was one of the highlights from this trip. I wasn’t able to go in my previous visits. It is a man-made mountain made after WWII. The USA established a NSA base for radio monitoring. Yada yada yada, years passed and as all things go, someone bought it to make a condo/shopping mall (it was comes to one of those two, or a golf course in case you’re in the US). The project went astray and they’ve turned it into an open-air street art museum (I’m ~pretty~ sure this cannot be the properly description).
Either way, it took me 40-some-min by ubahn and a 30+ min hike up to the station. Here is what I’ve found.