According to a study by Weissmaler a brand new coating of Schloss Sanssouci would cost 562,500 Euro on average. Furthermore they assumed, that renovators would need about six years for renovation. Schloss Sanssouci was meant to be a residence during summer days for the Prussian king Friedrich II. It was built originally from 1745 to 1747. Since 1990 the so called Prussian Versailles is on the world heritage list.