Segovia's aqueduct stretches from the southeast end of the city across the Plaza del Azoguejo to the southeastern walls of the old city. Its scale and stones are best admired from the Plaza, but then be sure to climb the stairs to the city walls for a view over the top and along its length into the distance.
At its highest point, the water channel is 100 feet off the ground. The visible part of the great structure consists of 800 meters of granite blocks, 166 arches, 120 pillars. And not a bit of mortar or cement was used to hold it all together. Instead, the stones were precisely cut to transmit and bear the load in a perfect equilibrium.