Cordoba Roman Bridge
The first beautiful historical site is the Roman Bridge of Cordoba. It was built by the Romans in the first century BC and, according to Arab geographer Muhammad al-Idrisi in around 1140, "surpasses all other bridges in beauty and solidity."
Rather from being only a work of art, the bridge played an important role in the city of Cordoba's wars with the ominously-named Peter the Cruel and others in the 1350s.
The Cordoba Roman Bridge spans the 657-kilometer Guadalquivir River and was erected in the first century BC. The bridge is 247 meters long and 9 meters wide, with 16 arches supported by irregular semi-cylindrical buttresses.
Location: Córdoba, Spain