Hello, I am traveling to Potsdam, Germany, for the first time, and I would greatly appreciate it if you could share with me a detailed list of activities and things to do in the city. Could you provide recommendations for the top attractions, experiences, and must-see sites in Potsdam, including any historical landmarks, cultural experiences, outdoor activities, or unique local experiences? I would love to know what makes Potsdam a special destination and how I can make the most of my visit.