The plans for the building of Sanssouci Palace came from Frederick II himself, who had based them on the work De la distribution des maisons de plaisance et de la décoration des édifices en général by the French architect Jacques-François Blondel.
Sanssouci Palace seen from the air, colour photograph, 2008, photographer: Sven Scharr; source: Wikimedia Commons, http://commons.wikimedia.org/wiki/File:Sanssouci-Air.JPG?uselang=de.