The Ducal Palace of Lerma, now a Parador, is located in the upper part of the town, located in the province of Burgos (Castile and Leon). The facade is crowned with a pediment supported by columns. The large wood door was adorned with 520 bronze studs. In the lower part of the building we find arches on each side. The columns are each made of one piece of granite. The castle has four towers on the corners with spires, recovered after the rehabilitation process.