So I came back to Berlin. It has been the fifth time. This time I was accompanying my friend to start his Euro Trip, so I acted as his guide haha. We took ICE train from Erfurt which took 2.5 hrs straight. We stayed in the hostel I had already stayed for the third time, which is Heart of Gold (tho the hostel was nice, think I really need to move on to another hostel, haha). Summer in Berlin is quite warm in early September, regardless of the somewhat windy weather. Knowing where to show, I took him to the must-visit sites such as East Gallery of Berlin Wall, Brandenburger Tor, Holocauset memorial, Checkpoint Charlie, Reichstag, Alexanderplatz. Unter Den Linden is much more crowded with tourists, but anything else was wonderful.