Roman aqueduct built under Vespasian or Trajan to bring water to the
city of Segovia from the Fuenfría spring, 17 km away. The monumental
stretch in town crosses the Azoguejo square with 167 arches in two tiers
of granite laid without mortar, held up by the pressure of the blocks
alone. It is one of the best preserved Roman aqueducts anywhere and
stayed in use until the 19th century. A UNESCO World Heritage Site since
1985.
