Pons Fabricius

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The Pons Fabricius (Ponte Fabricio, "Fabrician Bridge") or Ponte dei Quattro Capi, is the oldest extant bridge in Rome, Italy. Built in 62 BC, it spans half of the Tiber River, from the Campus Martius on the east side to Tiber Island in the middle (the Pons Cestius is west of the island). Quattro Capi ("four heads") refers to the two marble pillars of the two-faced Janus herms on the parapet, which were moved here from the nearby Church of St Gregory (Monte Savello) in the 14th century.

Adapted from Wikipedia (CC BY-SA). Photography via Wikimedia Commons.