Castillo de Valdecorneja overlooks the Tormes River from its hilltop position in El Barco de Ávila, originating from the twelfth century on the site of a destroyed Celtiberian settlement before being rebuilt in the fourteenth century by the powerful House of Alba. Constructed of granite rubblework, this military fortress was later transformed into a palace residence when the fourteenth-century courtyard was redesigned for greater comfort and functionality. The castle exemplifies the evolution of medieval military architecture into more livable aristocratic seats, with its strategic placement dominating the river valley and surrounding terrain. Regular visitor hours and guided access allow exploration of this granite-built landmark, which stands as testament to Castilian feudal power and the architectural innovations of Ávila's noble families.