In 1768 the new landlord began building a residence entre cour et jardin. The construction made rapid progress, so that in 1774 the castle could be occupied. The farm buildings were handed over in 1776, and the palace chapel was consecrated a year later. Nothing more has been handed down about its master builder, probably one of the numerous Saxon architects active in Warsaw and the rest of Poland in the 18th century. The initially introduced rococo elements were eliminated under the builder and from 1784 under his successor by the architects Dominik Merlini and Johann Christian Kamsetzer.
Castle Chapel: Raczyński Mausoleum
The Raczyński Castle is a monumental aristocratic palace in the late Baroque style with Classicist elements. It consists of a main building with two adjoining wings on the sides, which together form the semicircular border of the wide courtyard (cour d'honneur) open to the east. In front of this is a grass track to the east, bordered by two avenues of chestnut trees that start at the iron castle gate. The facility was family-owned until 1939. Source Wikipedia Today Museum