Andalucia is a mountainous region in the far south of Spain, rich in minerals and an important center for the production of olives, grapes, oranges and lemons. Andalucia (Al-Andalus) was the last stronghold of the Moors who first arrived here from North Africa early in the eighth century and were finally expelled in 1492. The Arab architectural legacy is an important reason for visiting the region, especially the three great cities of Córdoba, Granada and Seville.