The buildings are grouped around two courtyards and based on historic details which he had studied and sketched throughout the region; his "quotations" are accurate copies, but there is disagreement as to the originals, as in a façade which has been said to be based on the town hall at Tangermünde or on St. Catherine's Church in Brandenburg an der Havel, Lothar Heinke, "Trutzburg am Köllnischen Park feiert Geburtstag: Ein Speicher unterschiedlichster Exponate: Das Märkische Museum in Mitte wird hundert Jahre alt und zeigt in der Jubiläumsausstellung 'Gefühlte Geschichte' seine Schätze", Der Tagesspiegel, 9 April 2008 and the hip-roofed tower, 53 meters high, based on the bergfried (keep) of the Bishop's Castle in Wittstock or on the cathedral of Ratzeburg. [