Berlin
This was across the street from where we had dinner our first night there. The map says it was a Konzerthaus, which I thought might mean "concert hall"...I googled it...I was right! It's the Konzerthaus Berlin, and hosts orchestras and operas! Pretty building too! They were setting up a Christmas Market around it, but sadly, it did not open before we left Berlin. It is located, I am now learning, at the Gendarmenmarkt, which is regarded as one of the most beautiful squares in Berlin.