If you ever happen to be in Berlin I highly recommend paying a visit to the DDR museum. Even if you never really like museums, this one is so different it's very interactive and they show you life on the other side of the wall through objects and photos. It's really interesting to see how people used to live in East-Berlin, the differences between East and West were so big and now you can barely see the difference anymore.
That's it for Berlin, I had such a wonderful time in this city! I can't wait to go back one day!
Lots of Love,