In 1385, the Wittelsbachs began construction of a new residence that eventually became a much larger complex. The largest part of the work was undertaken during the Renaissance (Antiquarium, Kaiserhof, façade on Residenzstrasse) and Classical period (Königsbau). Today, the Residence is a museum with 130 rooms giving an overview of four centuries of princely rule. As well as a treasury, the building contains a collection of Egyptian art and coins.