Leonardo da Vinci\'s Lady with an Ermine is back on show at a castle in southern Poland\'s Krakow, after going on tour to Madrid, Berlin and London. The renown artwork painted by da Vinci between 1488 and 1490 will be on display at Chateau Wawel until renovations are complete at the Princes Czartoryski Museum, which owns the masterpiece, the chateau said. Lady with an Ermine is one of four known portraits of women painted by the Italian Renaissance artist. The other portraits are of Mona Lisa, Ginevra de Benci and La Belle Ferroniere (also known as Portrait of an Unknown Woman). The portrait is believed to depict Cecilia Gallerani, the mistress of the Duke of Milan, Ludovic Sforza. The Czartoryskis had acquired the painting around 1800, but it was taken by the Nazis, before being restituted to Poland after World War II.