Segovia Aqueduct

Byname �El Puente (Spanish: �The Bridge�),� water-conveyance structure built under the Roman emperor Trajan (reigned AD 98 - 117) and still in use; it carries water 10 miles (16 km) from the Fr�o River to the city of Segovia, Spain. One of the best-preserved Roman engineering works, it was built of some 24,000 dark-coloured Guadarrama granite blocks without the use of mortar. The aboveground portion is 2,388 feet (728 metres) long and consists of some