The Caños de Carmona (Pipes of Carmona) are the remains of a Roman aqueduct 17.5 kilometres long, later rebuilt by the Almohads, which connected the cities of Carmona and Seville, and which was fully operational until its demolition in 1912. It was primary constructed from bricks, and consisted of approximately 400 arches standing on pillars, with additional upper arcade sections in some places. It is believed to be the only example of this type of Roman construction in Spain.
The aqueduct was constructed approximately between 68 to 65 BC, the same period as the construction of the Walls of Seville and during Julius Caesar's term as quaestor. It was renovated and partially re-built between 1171 and 1172 by Almohad caliph Abu Yaqub Yusuf. During this period, he also built the Giralda mosque and minaret, the Puente de Barcas on the Wad al-Kebir river, and the Buhaira palace and gardens, for which the aqueduct also supplied water. Additional repairs were made in the thirteenth century when the Granada War began.
Three five-arch stretches of the aqueduct have survived in Seville.References:
The Basilica of Santa Maria in Trastevere is one of the oldest churches of Rome. The basic floor plan and wall structure of the church date back to the 340s, and much of the structure to 1140-43. The first sanctuary was built in 221 and 227 by Pope Callixtus I and later completed by Pope Julius I.
The inscription on the episcopal throne states that this is the first church in Rome dedicated to Mary, mother of Jesus, although some claim that privilege belongs to the Basilica di Santa Maria Maggiore. A Christian house-church was founded here about 220 by Pope Saint Callixtus I (217-222) on the site of the Taberna meritoria, a refuge for retired soldiers. The area was made available for Christian use by Emperor Alexander Severus when he settled a dispute between the Christians and tavern-keepers.
The church underwent two restorations in the fifth and eighth centuries and in 1140-43 it was re-erected on its old foundations under Pope Innocent II.