Situated in northwestern Spain, Castilla y Léon is the largest autonomía (autonomous region) in the country. Castilla y León is known for its traditional beauty, plentiful fortifications, and historical importance. This area was dubbed the Kingdom of Castles due to hundreds of forts, castles, and patrolled walls defining the landscape.
Castilla y León has been home to princes, noblemen, intellectuals, artists, and brilliant military minds since the Romans constructed the famed Segovian Aqueduct. The oldest university in Europe has held classes in Salamanca since 1134 (Universidad de Salamanca) and the Duero River (Douro in Portugal) has been a perennial causeway to transport goods. By maintaining a foothold in the united kingdoms of Castilla and León, Ferdinand and Isabella successfully finished their Reconquista of Spain in 1492.