Georg Christian Unger
Georg Christian Unger (25 May 1743 in Bayreuth – 20 February 1799 in Berlin) was a German architect. He was a pupil of the architect Carl von Gontard and served for Frederick II of Prussia.  He created a lot of buildings  in Potsdam, e.g. Brandenburg Gate, and Berlin, e.g. at the Gendarmenmarkt.