In the years 1690-1696, on the initiative of Primate MichaÓ Stefan Radziejowski, a Baroque palace was erected according to a design by Tylman of Gameren. At the end of the 18th century the estate got into the hands of Prince MichaÓ hieronim RadzwiÓÓ and his wife Helena n¾e Przeüdziecka. They richly furnished it and partly changed the interior decorations. They also brought with them many valuable works of art, including the head sculpure of "Niobe", a Roman copy of the Greek original from the 4th century. Not far from NieborÙw a sentimental park called Arkadia was soon founded by Princess Helena RadzwiÓÓ; one of the designers was Szymon BogumiÓ Zug. The last owner of NieborÙw was Prince Janusz RadzwiÓÓ who modernized the palace in 1922 according to a design by Romuald Gutt. After 1945 NieborÙw became a branch of the Warsaw National Museum. Apart from the magnificent interior the palace has a rich library, guest-rooms, and it hosts various meetings and conferences. it is surrounded by an enchanting and well-kept park.