Krakow’s Princes Czartoryski Museum.
The Czartoryskis Museum, which dates back to 1801, is the oldest museum in Poland. The museum can boast the country’s most valuable collections of art, ancient handicrafts, and memorabilia connected with historical figures. Its best know exhibit is Leonardo da Vinci's famous ‘Lady with an Ermine’, a superb portrait of a teenage mistress of Lodovico Sforza il Moro, Milan's ruler of the late 15th century.
The Princes Czartoryski Museum occupies three old buildings at the northern edge of Krakow’s Old Town historical center by the medieval city walls. The 19th-century neo-Gothic palace of The Czartoryskis aristocratic family and the 18th-century former monastery opposite contain permanent expositions, while the adjoining 16th-century municipal Arsenal holds temporary shows downstairs and an exhibition of ancient art upstairs.