The excavations of the Roman city of Labitolosa Historical milestone · La Puebla de Castro, La Ribagorza, Huesca Image of La Puebla de Castro, not of the place itself. A joint team from the universities of Bordeaux and Zaragoza has been excavating regularly since 1991 the Calvario hill, where between the 1st century BC and the late 2nd century AD stood the most important Roman city of the middle Ésera. desde 1991 Photo: Jordiferrer (CC BY-SA 4.0) What to see and do in La Puebla de Castro