Travel with children · Germany

Hi everyone. A few days ago, I asked my 14-year-old son to pick a destination for a trip, and he chose Germany. So, we’re heading to Berlin for four days in February. The catch is that I don’t know this city (or this country) at all—I hadn’t even considered visiting just a month ago . Could you please share some suggestions to make this first mother-son trip abroad a success? 🙂 Thanks for your tips and great deals. Nanyne