Today the travel agency organized a city tour for us. We were picked up at 9:30 am by the guide who speaks perfect German. He is well-informed about the history of the country and very relaxed. So, we took a smoke break in front of the hotel and then started walking slowly :)
After a leisurely walk to Red Square, he told us a lot of things. After the changing of the guards at 11 am (where the Tomb of the Unknown Soldier is guarded), we went to the Kremlin.
I was particularly surprised by Cathedral Square. There are several beautiful cathedrals here.