Do not leave Potsdam (or even Berlin) without visiting the Barberini Museum in the Barberini Palace. Opened in January and absolutely not to be confused with the institution of the same name in Rome, this new art museum is the creation of the software magnate Hasso Plattner, whose wealth Forbes puts at $9.8 billion. It is collection which forms the core of what’s on show. The current exhibition is: Picasso, The Late Work. From the collection of Jacqueline Picasso.