Berlin is amazing city which I really like. You can have it all: extremely nice people who are trying to help you even in the case you do not speak the common language, great food and beer, lots of museums and points of interest. This city is so modern, but at the same time it is full of historical memories. It’s so vivid that you’ll never be bored. The must-see places are East Side Gallery, Checkpoint Charlie, Reichstag. Everything else depends upon your personal interests and preferences. Enjoy!