Berlin

I'm going to Berlin a week before attending a festival. Although I've been more than 15 times, It's been two years since my last visit and I am looking forward to discover new things. Could you recommend something for a frequent visitor? Would you share a couple of secret spots with me this time?

Not very secret but have you been to see the huge nazi wind tunnels

Not very secret but have you been to see the huge nazi wind tunnels
https://en.wikipedia.org/wiki/Aerodynamic_Park

Made https://reality.eth.limo. Building Backstop Layer2 https://backstop.technology  Mainly post about goats.

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Hey Edgar! Thanks for sharing Looks amazing. I did a tour with some friends years ago through some tunnels. I will check it

You can't go inside or anything, it's just a bunch of weird massive concrete buildings, but it's good if you like weird massive concrete things