Castet-ArrouyCastet-Arrouy is a commune in the Gers department in southwestern France.GeographyThe river Auroue flows north through the commune and forms part of its northeastern border.PopulationSites of interestThe Church of Saint Blandine is the main church of Castet-Arrouy. The choir was painted with murals by artist Paul Noël Lasseran in 1901.