The Roman bridge of Córdoba was originally built in the early 1st century BC across the Guadalquivir river, though it has been reconstructed at various times since. Most of the present structure dates from the Moorish reconstruction in the 8th century.
Currently, after the Islamic reconstruction, has 16 arcades, one fewer than originally, and a total length of 247 meters. The width is around 9 meters.
The Via Augusta, which connected Rome to Cádiz, most likely passed through it. During the early Islamic domination the Muslim governor Al-Samh ibn Malik al-Khawlani ordered a bridge to be built on the ruins of what was left of the old Roman construction. In the Middle Ages, the Calahorra Tower and the Puerta del Puente were built at the bridge's southern and northern ends, respectively (the latter is now a 16th-century reconstruction). The bridge was reconstructed and expanded to its current size. The arches depict the famous Moorish architecture that dominates the city's scenery. In the 17th century, a sculpture depicting St. Raphael was put in the middle of the bridge, executed by Bernabé Gómez del Río.
During its history, the bridge was restored and renovated several times (in particular in the 10th century), and now only the 14th and 15th arches (counting from the Puerta del Puente) are original.
References:Trenčín Castle is relatively large renovated castle, towering on a steep limestone cliff directly above the city of Trenčín. It is a dominant feature not only of Trenčín, but also of the entire Považie region. The castle is a national monument.
History of the castle cliff dates back to the Roman Empire, what is proved by the inscription on the castle cliff proclaiming the victory of Roman legion against Germans in the year 179.
Today’s castle was probably built on the hill-fort. The first proven building on the hill was the Great Moravian rotunda from the 9th century and later there was a stone residential tower, which served to protect the Kingdom of Hungary and the western border. In the late 13th century the castle became a property of Palatine Matúš Csák, who became Mr. of Váh and Tatras.
Matúš Csák of Trenčín built a tower, still known as Matthew’s, which is a dominant determinant of the whole building.