2014Unesco World Heritage Town of Elvas - First Day Cover MS

Since the Muslim occupation of Ialbax by king Sancho II in 1230 and until its was promoted to city in 1513, the development of Elvas was solid, favoured for its relevant geographical position which over the centuries gave it an outstanding military preponderance, reflected in the construction of fortification lines and military buildings. In the second half of the fourteenth century, another fortification was added to the two Muslim walls, with 11 gates and 22 towers, which became forever represented in the drawings of Duarte de Armas.