It can be said that those who know he works of Karl Friedrich Schinkel (1781–1841), Ludwig Persius (1803–1845) and Friedrich August Stüler (1800–1865) in Berlin and Potsdam also know the architects’ work as a whole in each case. The truly gigantic lifework of Schinkel extends from Aachen to St. Petersburg; Berlin and Potsdam have about a third of his work. During his short life Persius worked almost exclusively in Potsdam and its intimate vicinity; he was the King’s architect. Stüler’s work is found in a region extending from Cologne on the Rhine to Masuria, with some important buildings in Stockholm and Budapest as well. About a quarter of his work can be found in Potsdam and Berlin where Stüler too was the King’s architect.