Vienna. Izabela's descendants added works from Greece, Rome, Egypt and Japan. In 1798 Prince Adam Jerzy Czartoryski, Izabela's son, visited Italy where he bought Leonardo da Vinci's Lady with an Ermine and Raphael's Portrait of a young man. Rembrandt's Landscape with the Good Samaritan is the third of the "big three" works in the collection. By 1939 the collection had 5,000 paintings, statues and other antiquities. When the Germans invaded Poland that year, Augustyn Józef Czartoryski had the most valuable items hidden beneath the baroque Sieniawski family castle, while others were stored in the cellar of the museum. However the Germans found the collection and the works were taken to various locations in Germany. After the war the Polish representative at the Allies Commission for the Retrieval of Works of Art found many of the stolen paintings and claimed them for the Czartoryski Museum. The Portrait of a Young Man was not recovered. The museum became a branch of the National Museum of Poland in Kraków. The collection now included 86,000 artworks and 250,000 books and other manuscripts. In London in the late 1960s Adam Karol Czartoryski met Professor , who had been appointed in 1965 as director of the Czartoryski Collection in Poland. In 1991 Professor Rostworowski was appointed Minister of Culture. That year the High Court restored the Czartoryski Museum and Library and their contents to Czartoryski, who set up the Princes Czartoryski Foundation to manage the collection. The National Museum continued to maintain and administer the collection, renting the buildings from the foundation. The Princes Czartoryski Museum in Kraków was closed for extensive renovations in 2010, including adding a glass and steel roof to a courtyard that was not being used. The foundation obtained funding for the works from Norway Grants, local and national government authorities and loans to foreign exhibitions of the Lady with an Ermine, but by the end of 2016 had run out of money, while the project would cost about €6.9 million to complete. Czartoryski decided to entrust his collection to the Polish Nation, including the Lady With An Ermine, Landscape with the Good Samaritan and works by Pierre-Auguste Renoir. The agreement to sell the collection to the Polish state for €100 million was signed on 29 December 2016. The deputy prime minister and minister of culture, Piotr Gliński, signed on behalf of the Republic of Poland. The purchase price was far below