Where the region of Castile in Spain is?

Castile, or Castilla in Spanish, is a historical region in central Spain. It is located in the northern half of the Iberian Peninsula, and is one of the largest autonomous communities in Spain. Castile is bordered by Portugal in the west, the regions of León and Asturias in the north, the Pyrenees mountains in the northeast, the Mediterranean Sea in the southeast, the region of Andalucía in the south, and the region of Extremadura in the southwest. The region is home to the capital of Spain, Madrid, and various other important cities, including Burgos, Salamanca, and Valladolid.