[File:Àmbits de Catalunya 1995.svg|thumb|Catalan regional plan 1995, used as the basis for different veguerias projects. ]] The vegueria (, ; pl.vegueries) was the feudal administrative territorial jurisdiction of the Principality of Catalonia (to the Crown of Aragon) during the Middle Ages and into the Modern Era until the Nueva Planta decrees of 1716. The vegueria was headed by a veguer and its office was called a vigeriate .