“French billionaire Francois Pinault has dramatically extended his Venetian empire of contemporary art this week, and given the city a new museum. Pinault’s foundation has taken over one of the most prominent buildings in Venice: the old customs house, or Punta della Dogana, just across the water from Piazza San Marco. Pinault … becomes by far the biggest contemporary-art presence in the hometown of Titian and Giorgione.”