POTSDAM - BERLIN
I have visited Potsdam a few times and it with Berlin are some of the most fasinating places to visit.
Here are some photos of the castles and gardens around Potsdam.

Gliniecker BridgeCastleCastle 2Castle 3Castle 4
Castle 5Einstein ObservatoryForestGFZMonument
PotsdamSan SousiStatuesMonumentForest