That's that building on Konstablerwache, at the end of the Zeil! I was there many times... (Last time last August, I was offered drugs here one night...)

I remember that once two decades ago, there was some show event sponsored by the watchmaker Citizen, with the big attraction being motorbikes running up a cable that was attached to the building you picture, I mean attached rather high.

_{*Lunatic*, n.
One whose delusions are out of fashion.}