Duke Juryj Ivanavič Illinič (pl:Jerzy Iwanowicz Ilinicz) began construction of the castle near the village of Mir after the turn of the 16th century in the Belarusian Gothic style. Five towers surrounded the courtyard of the citadel, the walls of which formed a square of 75 metres (246 ft) on each side. In 1568, when the Ilyinich dynasty died out, the Mir Castle passed into the hands of Mikalaj Kryštafor "the Orphan" Radziwil, who refitted it with a two-winged, three-story stately residence along the eastern and northern inner walls of the castle. Plastered facades were decorated with limestone portals, plates, balconies and porches in the Renaissance style.
Their son, Maurice Hohenlohe-Schillingsfürst, sold the castle to Mikalaj Sviatapolk-Mirski, of the Bialynia clan, in 1895. Mikalaj's son Michail began to rebuild the castle according to the plans of architect Teodor Bursche. The Sviatapolk-Mirski family owned the castle until 1939, when the Soviet Union occupied Western Belarus.
When German forces invaded the Soviet Union in 1941, they occupied the castle and converted it to a ghetto for the local Jewish population, prior to their murders. Between 1944 and 1956, the castle was used as a housing facility, resulting in damage to the castle's interior.
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