Visit a winery
The Priorat is a working region, not a theme park. Most wineries welcome visitors but appreciate a phone call ahead. Mas Doix in Poboleda for old-vine Garnacha; Clos Mogador in Gratallops for the name that defined modern Priorat; Costers del Siurana for the view from the tasting room. I can call ahead for you if you want.