The Brandenburger Tor is literally the symbol of Berlin. It is one of the most tourist attractions in Berlin, which is crowded every summer and winter. In the corner of the branderburger tor, there is Unter den Linden street which is very popular for walking, ideal for relaxing and shopping. Just north of it is the Reichstag, which you will most likely want to visit. Apart from this, every kind of Christmas celebration, giant city event is happening here.