Castle History

Rising above the town of Berlanga de Duero, this massive fortress dominates one of Castile's most strategic crossroads. Castillo de Berlanga de Duero's origins stretch back to the medieval frontier period, when the region lay between Christian and Muslim territories. Early fortifications were established during the Reconquista to secure control over the Duero basin. Over time, the stronghold was expanded into an imposing stone castle with extensive walls and towers. In the 15th century, it became the seat of the powerful House of Tovar. Later, the Dukes of Frías transformed the medieval fortress into a modern bastioned stronghold. Italian-style trace italienne defenses were added to withstand artillery warfare. These modifications made it one of the most advanced fortifications in Spain at the time. The castle controlled key roads linking central Castile with Aragón and the north. During internal conflicts, it served as a refuge and military base for noble factions. By the 17th century, changing warfare reduced its strategic importance. Maintenance declined as military priorities shifted elsewhere. The complex gradually fell into ruin, though its massive scale endured. Today, both medieval walls and Renaissance bastions remain clearly visible. The surrounding landscape emphasizes Castillo de Berlanga de Duero's dominance over town and countryside. The site stands as a striking example of the transition from medieval castles to early modern fortifications in Spain.