The city which is over 1000 years old is widely known for its palaces, its lakes, and its overall historical and cultural significance. Landmarks include the parks and palaces of Sanssouci, Germany's largest World Heritage Site, as well as other palaces such as the Orangery Palace, the New Palace, the Cecilienhof Palace, or the Charlottenhof Palace. Potsdam was also the location of the significant Potsdamer Konferenz in 1945, the conference where the three heads of government of the USSR, the US, and the UK decided on the division of Germany following its surrender, a conference which defined Germany's history for the following 45 years.