Beauté-sur-Marne was a royal castle near Vincennes, situated on the territory of the current commune of Nogent-sur-Marne."Of all the pleasant and agreeable places one can find in this world, built in a suitable way, gay and pretty, to live and reside, that which is at the end of the forest of Vincennes, which was built by King Charles -- god grant him peace, joy, and health -- his eldest son, the Daupin of Viennois, gives the name of Beauty." -- Ballad of Eustache Deschamps (1346-1406)Charles V, who sought the calm at a distance of the official court of Vincennes restored "Beauty" in 1473.