The film version of The DaVinci Code hits theatres this month, and the Louvre is bracing for a tidal wave of vistors as a result. After all, the legendary museum plays a crucial role in the story, and officials allowed director Ron Howard to film several key scenes in its galleries. Despite the logistical difficulties involved (the book calls for a character to tear down a priceless Caravaggio painting, for instance,) the Louvre and the Hollywooders reported no conflicts.