...Beautiful postcard showing a fantastic historical construction...and a new UNESCO site with as extra bonus matching UNESCO stamps^^...Thanks Joao!!
Unesco World Heritage Town of Elvas
Lying outside the city walls is the city's most famous sight, the towering Amoreira Aqueduct, 7km (4.5miles) in length that took over 100 years to complete.(from 1498 till 1622) With a total of 843 arches, and at places rising to over 30m (100ft), it still brings water to town.