Gratallops Main Festival Activity · Gratallops, Priorat, Tarragona Image of Gratallops, not of the place itself. The Festa Major de Gratallops is held in the town considered the heart of the DOQ Priorat, where from 1979 a small group of winegrowers revived old garnacha and cariñena vines on slate soils that changed the region's reputation. Photo: Viquipèdia (CC BY-SA 3.0) What to see and do in Gratallops