da Milano and a high-relief by Domenico Gagini (c. 1480) Aqueduct The Roman aqueduct bridge is the largest and best preserved of the island. The source was located 5 km east of the city, at the foot of Monte San Calogero where the remains of the two settling tanks can still be seen in the locality of Brucato. The aqueduct needed to cross the Barratina stream and the earliest the crossing was made at Fontana Superiore with a siphon about 600 m long, of which the well preserved hexagonal compression tower remains, 16 m high and resting on a square plinth of 6 m sides. On five of the sides were windows and from the east side the conduit started. On this tower was once a large inscription, now disappeared: aquae Cornealiae ductus p. XX. The last letters ("twenty feet") perhaps corresponds to the sides of the building. Later it seems that the aqueduct passed further downstream: in Figurella a double-order bridge of arches is still visible (originally nine in the lower, fifteen in the upper: two arches for each order collapsed), 14 m high. The structure with facing blocks is the same as that of the amphitheatre and the curia and shows that it belongs to the same building project of the Augustan colony. Sister cities Elk Grove Village, United States, since 2002 La Valletta, Malta, since 2014 Zihuatanejo, Mexico, since 2014 Vilnius, Lithuania, since 2014 Maranello, Italy, since 2016 Notes References Sources External links Selected Civil Records Municipalities of the Metropolitan City of Palermo Ancient cities in Sicily Carthage Roman towns and cities in Italy