Categories Travel Green laser in Berlin Post author By admin Post date February 16, 2009 2 Comments on Green laser in Berlin There's a seriously cool green laser on top of a Siemens building in Adlershof in Berlin. Tags Berlin, laser ← MDF plug pictures → Links - February 20, 2009 2 replies on “Green laser in Berlin” As an astronomer I would better say: "seriously unnecessary light pollution" 🙂 ... or is this laser used for any scientific purpose? CU Frank I looked at it closer today. I don't know if they change the direction every now and then, but today it was pointing pretty horizontal. I don't think it's useful in any way, it's just for show.