In the centre of the kingdom lay its capital, the beautiful city of Granada, sheltered, as it were, in the lap of the Sierra Nevada, or Snowy Mountains. Its houses, seventy thousand in number, covered two lofty hills with their declivities and a deep valley between them, through which flowed the Darro. The streets were narrow, as is usual in Moorish and Arab cities, but there were occasionally small squares and open places. The houses had gardens and interior courts, set out with orange, citron, and pomegranate trees and refreshed by fountains, so that as the edifices ranged above each other up the sides of the hills, they presented a delightful appearance of mingled grove and city. One of the hills was surmounted by the Alcazaba, a strong fortress commanding all that part of the city; the other by the Alhambra, a royal palace and warrior castle, capable of containing within its alcazar and towers a garrison of forty thousand men, but possessing also its harem, the voluptuous abode of the Moorish monarchs, laid out with courts and gardens, fountains and baths, and stately halls decorated in the most costly style of Oriental luxury. According to Moorish tradition, the king who built this mighty and magnificent pile was skilled in the occult sciences, and furnished himself with the necessary funds by means of alchemy.* Such was its lavish splendor that even at the present day the stranger, wandering through its silent courts and deserted halls, gazes with astonishment at gilded ceilings and fretted domes, the brilliancy and beauty of which have survived the vicissitudes of war and the silent dilapidation of ages. * Zurita, lib. 20, c. 42. The city was surrounded by high walls, three leagues in circuit, furnished with twelve gates and a thousand and thirty towers. Its elevation above the sea and the neighborhood of the Sierra Nevada crowned with perpetual snows tempered the fervid rays of summer, so that while other cities were panting with the sultry and stifling heat of the dog-days, the most salubrious breezes played through the marble halls of Granada.