Aqueduto das Águas Livres - view point

This guide to the Aqueduto das Águas Livres view point in Lisbon traces the eighteenth-century quest to solve the city's water shortage, from King João the Fifth's seventeen thirty-one commission through the engineers who carried a gravity-fed channel fourteen kilometers into the city. It lingers on the thirty-five pointed arches raised across the Alcântara valley, built just years before the earthquake of seventeen fifty-five reshaped the city around them. Look up at the arch's pointed geometry, the same principle used in cathedral vaulting.