document.write('Castilla y Leon is the largest region of Spain. The high plain is bounded by the mountain ranges of Sistema Iberico to the east, Cordillera Central to the south, and Cordillera Cantabrica to the north. The ancient kingdom of Leon which was eventually annexed to Castile embraced three cities, Salamanca, Zamora and the provincial capital of Leon. Today the region is known for its many castles and monuments. Old Castile once held power that has long since shifted to Madrid. The region holds many surprises and offers excellent, unspoilt countryside and natural parks. The region abounds with monasteries, castles and fortified towns, many of which are well preserved. <p>Castilla y Leon lies north-northwest of Spain\'s capital, Madrid. It is a large region made up of nine provinces. Previously known as Old Castile, it is a mix of flat and open plains girded by chains of hills and mountains, and home to some of Spain\'s finest historical heritage. The region is traversed by the graceful Duero River which has acquired international fame for nurturing the great Port wines in Portugal where the river is known as the Douro. Castilla y Leon is known for its red wine, though it also boasts a very important white wine region.');