1. Cecilienhof Palace, located in Potsdam, Germany, is a historic building that was constructed between 1913 and 1917 for Crown Prince Wilhelm of Germany and his wife Crown Princess Cecilie. The palace is famous for hosting the Potsdam Conference in 1945, where the leaders of the Allied powers - Winston Churchill, Joseph Stalin, and Harry S. Truman - met to discuss post-World War II Europe. The palace is a beautiful example of English Tudor architecture and is surrounded by a large park.
2. Cecilienhof Palace is open to visitors from April to October, Tuesday to Sunday from 10:00 am to 5:30 pm. The palace is closed on Mondays. Unfortunately, I do not have a phone number for the palace, but you can find more information on their official website or contact the local tourist information center.
3. Tickets for Cecilienhof Palace can be purchased on-site or online. The prices vary depending on the type of ticket you choose, such as a standard ticket, a discounted ticket for students and seniors, or a family ticket. Guided tours are also available for an additional fee. To reach the palace, you can take public transportation, such as a bus or train, from Berlin to Potsdam. Once in Potsdam, you can either walk or take a short taxi ride to Cecilienhof Palace.