My favorite German band performed at an open air event in Berlin last night. Pictures popped up as I perused my Facebook feed this morning. I tried to find a picture elsewhere, but the best I can do is the one on the band's Facebook...
https://www.facebook.com/Revolverheld/posts/347328946762887
Each group of attendees is crated into its own area.
I'm hoping to hit an open air show in the fall.