On the southern shore of one of the most beautiful bays of the Riviera, the little port of St. Tropez has become one of the best known resorts in Europe, a crossroads where journalists, photographers, writers, artists and celebrities meet. Guy de Maupassant discovered the town, but it was the painters who made it more widely known - Signac, Matisse, Bonnard, Marquet, Camoin - who all stayed for v…