Fes or Fez is a city museum unavoidable, it is one of four "imperial cities" (with Marrakech, Meknes and Rabat).Swarming and colorful, it offers stunning scenery, as the Medina of Fez el-Bali, the largest town in the Arab world, under the protection of UNESCO is unchanged since the twelfth century.According to legend, the name of the city comes from the discovery of a pick (Arabic: [FA's], pick) to the location of the first foundations.