The castle in Nesvizh, like most buildings of this kind, has been rebuilt many times. Each new owner or family member modified the castle’s structure according to their needs, but also according to the prevailing fashions in architecture.
The land in Nesvizh was given to Mikołaj Niemirowicz in 1446 by King Kazimierz Jagiellończyk in recognition of his service. In the following decades, the land changed owners several times, until it became the property of the Radziwill family in the first half of the 16th century. They expanded the wooden manor house located here many times, eventually turning it into a vast castle-palace-park complex, with a richly decorated castle and accompanying wings, galleries and a church.
Among the architects working in Nesvizh was a representative of the early baroque, Jan Maria Bernardoni, who designed another extension of the palace in the 1580s as well as a church situated on the property. Bernardoni designed the Church of St. Peter and Paul in Kraków, which is considered one of the best examples of early baroque architecture in Poland. In 1994, the Belarusian government recognised the Nesvizh castle as a national historical and cultural monument, and in 2005 the monument was included on the UNESCO World Heritage List.