Festival of Lights, Berlin

K and I are really excited!  When we booked out trip to Berlin a few months ago, we chose the date mainly for convenience and of course because it coincided with his birthday!  We have now discovered that our trip will be during the Festival of Lights!  I have got to be honest, until a couple of days ago, I had never heard of this festival, and since then I have been enchanted with all the images I have discovered on the internet!  If I can do the lights justice, I will be adding my own images after our trip.  If anyone could tell me some of the best places to view the lights, it would be very helpful.