Krakow is one of just six places in the world that can show a painting by Leonardo da Vinci (1452-1519). Krakow’s Lady with an Ermine is one of his three female portraitsarguably and probably the most beautiful. It’s also in the best shape after the 500-plus years that elapsed. Leonardo’s masterpiece is in The Czartoryskich Museum at 19 Sw. Jana street . Leonardo da Vinci painted her some 20 years before the Louvre’s famed Mona Lisa–and for the first time he showed the sitter in the way that would soon become the standard. Art historians maintain it’s the world’s first modern-age portrait ever painted.  The portrait of the Lady with an Ermine was bought by Prince Adam Jerzy Czartoryski in Italy and incorporated into The Czartoryskis’ family collections in 1800.