Turns out that if you Google "Jugendstil Berlin" you'll find lots of pictures of the Hackesche Höfe, but you needn't go to so much trouble, since I need to take at least five pictures every time I walk through there.
Okay, you got me, I guess that's only four. Let's round it out with some other shots that are more or less related to the architecture theme.
The final shot being of a kind that I'm sure someone somewhere has dedicated a hashtag to: the architecture selfie. Maybe it's a personal collection waiting to happen, because it happened again in May at the Reichstag... but it can't be helped – buildings are just shiny like that.