The Vizier, Almanzor, removed the eastern wall of the Mosque and extended the building in order to add eight new naves. These naves had the same number of arches as those already standing, and they were intersected at right angles with lesser naves, thirty-five in number. At this period a lack of space necessitated a narrowing of some of the arches, and the curves were made more pointed. Every conceivable ornamentation was introduced in the beautifying of these arches.
The foseyfasa, or enamel-work of the Moors, is seen in its brilliant examples in the Mosque. This enamel, called foseyfasa by the Arabs, is composed of crushed glass and small pebbles baked together with gorgeous colours, and sometimes containing an admixture of gold and silver. It was used at Damascus, in the great Mosque, and at Constantinople. According to Gayangos, this mosaic enamel was set in its place by Greek mechanics imported by Abd-er-Rahman. This work is finely exampled upon the entrance to the sanctuary, and throughout the Mosque there are specimens of this wondrous art of embellishment.
The principal nave of the Mezquita has huge arches on stone columns, with finely carved capitals, and a large number of minor arches in the Estilo del Califato. Most of these columns were made from the stone of Spanish quarries. They are of jasper, marble, and other stone, and number nearly nine hundred. Narrow avenues run transversely through the grand aisles. We are lost in them; these passages appear interminable, and their ribbon decorations bewilder the eyes.
We approach the sacred mih-rab, the receptacle of the Koran, the holiest of holies of the temple. The façade is exceedingly beautiful, in the later style of decoration, and the arcades of the vestibule of the sanctuary have fine triple arches and interlacing curves of exquisite design. The dome is cone-shaped.
The door is in the Estilo del Califato, dazzling in the wealth of its colouring, marvellous in the grace and symmetry of its main arch, trefoil arches, and delicate frets. The mih-rab is seven-sided, with a cupola of extraordinary richness of hue, and details of the greatest interest. One is baffled in attempting to describe this sanctuary. The technical terms of architecture do not convey a conception of its beauty to the lay mind. In the days of its glory, the mih-rab was illuminated by an enormous lamp and huge candles. El-Makkari, the Arab, says that the great lantern had nearly fifteen hundred lights, and that the total number of lights was over ten thousand. The enamels shone with their brilliant hues in the rays of these lamp-lights and candles until the eye could scarcely rest upon the walls and the cupola. Here the khalifs came in pomp to worship, and to scan reverently the pages of the costly Koran.
The hollowed roof of the mih-rab and the floor are of white marble. We may see the marks worn by the knees of the faithful who came hither to pay their devotions to the Father of Islam. The mosaics of the walls exhibit the finest designs and richest tones of the foseyfasa work. This is the third mih-rab, the production of Hakem, and it is a retreat that speaks eloquently of that piety which seeks to glorify a deity by the erection and adornment of a temple. It is resplendent beyond compare.
This chamber was the repository of the famous nimbar, a pulpit on wheels, which had seven steps, and could be moved to any part of the Mosque. When the Christians regained power in the city, this highly ornamented pulpit was cut into pieces, and portions of it were used in the construction of the altar. The superb copy of the Koran, to which we have referred before, was kept in a golden case, mounted with precious stones. It was so heavy that two men were required to carry it.
Upon the ceiling of the Mezquita there were formerly inscriptions. Among them were the command: ‘Be not one of the negligent,’ and the dictum: ‘There is no God but Allah, to whom all beings address themselves in their need.’ The Christians effaced these inscriptions when the Mosque was purified and consecrated to the Virgin Mother.
In the Capilla de Villaviciosa we shall see the Arab-Byzantine crossed arches on decorated columns. This was the retreat of the Khalif, and it was once lined with silver. The chapel is the only one of Moorish interest. There are forty-five Christian chapels, but these scarcely demand inspection. In front of the Capilla of San Pablo is the tomb of Pablo de Céspedes, the Cordovese painter. This chapel has a horseshoe arch with sharp points. The Capilla de la Cena contains ‘The Last Supper,’ painted by Céspedes. And in the Sala Capitular were statues by Alonso Cano and de Mora.
The chapels were constructed from the side aisles of the Mezquita when the building was dedicated to the Christian faith. After the capture of Cordova by San Fernando, the original work of the Moorish builders was spoiled in many parts of the Mezquita. Large surfaces, beautifully designed and coloured, were removed by the innovators, columns were pulled down, and screens destroyed. ‘The gold lavished on the panelled ceilings,’ so praised by an Arab poet, was obliterated in many places; the Christian architects wrought havoc in almost every part of the structure. No doubt the pious reconstructors were unconscious of their vandalism. They sought to improve upon the art of the Mohammedans, and to build a worthier edifice. But their failure is only too apparent, and it has been admitted by Spanish writers. Charles V. expressed sorrow at the garish and meagre innovations, saying that the designers and craftsmen had destroyed a great and unique work of art in their endeavour to improve upon the design of the Moriscos.