I visited Berlin once, but only for a few hours, so my sightseeing was quite limited. I took a boat tour on the Spree, which was a wonderful way to admire many of the city's most famous landmarks from the water. 😊 One place I would definitely recommend is Potsdam. It has beautiful parks, impressive palaces and amazing architecture. Just keep in mind that Potsdam is quite spread out, so it's much easier to explore if you have a bike, a car, or can use public transport. I hope you have a wonderful trip!