 He was involved with the planning of the "Traktes" of the Hofburg for "Michaelerplatz", which only in the years of Ferdinand Kirschner (with easy changes) was built only much later (1889–1893) and with some modifications, since the Hofburg theatre stood in the way.On the same plans, he based also Königliche library in Berlin, which from 1775 to 1780 was built by George Christian Unger.In 1728, he replaced Johann Lucas von Hildebrandt with the building the "Reichskanzleitraktes" of the Hofburg.