Castelo de Ribadavia, perched on a promontory above the River Avia in Galicia, traces its origins to the 9th century, with definitive construction completed in the second half of the 15th century. The fortress served as the seat of the Counts of Ribadavia from the Sarmiento family until the 17th century and displays the coats of arms of both the Sarmiento and Fajardo families on its main entry. The castle contains 9th-century rock-cut burials and a 12th-century sepulchre and now hosts the prestigious Ribadavia International Theater Festival each July, making it a living cultural landmark alongside its medieval heritage.