Besides Versailles, there was another palace that witnessed a flight of fancy--one original flight, and then tens of thousands of impregnated others. Their sum total? Perhaps "the French Revolution." The Palais-Royal stands on the right bank, just north of the Louvre, with a huge garden space behind it. Cardinal Richelieu had lived there, Moliere played and died there, and later, the palace was given to the king's cousin, the Duc d'Orl ans...