The Berlin Palace, formally the Royal Palace and also known as the City Palace, is a large building adjacent to Berlin Cathedral and the Museum Island in the Mitte area of Berlin. It was the main residence of the House of Hohenzollern from 1443 to 1918. Expanded by order of Frederick I of Prussia according to plans by Andreas Schlüter from 1689 to 1713, it was thereafter considered a major work of Prussian Baroque architecture.