Palencia is a city in the northwest of the Tierra de Campos of northwest Spain, the capital of the province of Palencia in the autonomous community of Castile-Leon. The municipality had a population of 80,801 in 2002. Palencia contains a few historic sights. The Roman bridge across the Carrión river was replaced by the medieval one of three arches: the old section of the city is on the left bank, the modern suburban development is on the right bank: it seems likely that the first inhabitants settled on the right bank, and later moved to the left bank — set in higher ground — because of the frequent floodings. The old city walls more than 10 meters high can still be traced; the alamedas or promenades along them were laid out in 1778. The flamboyant Gothic Cathedral built from 1321 to 1504 and dedicated to San Antolín, stands over a low vaulted Visigothic crypt; its museum contains a number of important works of art, including a retablo of twelve panels by Juan de Flandes, court painter to Queen Isabella of Castile. The Archeological Museum contains Celtiberian ceramics. Palencia is also famous for the 13th-century church of San Miguel and the Benedictine monastery of San Zoilo, housed in an 18th-century rococo structure by Juan de Badajoz.