The Giralda is quadrangular in section, and covers a space of 13.60 square metres. The architect--whose name is variously spelt Gever, Hever, and Djabir--is said to have used quantities of Roman remains and statuary as a base for the foundations. The thickness of the wall at the base is nine feet, but it increases with the height, the interior space narrowing accordingly. The lower part of the tower is of stone, the upper part of brick. At a height of about 15 metres above the ground begin those decorations in stone which lend such elegance and beauty to this stout structure. They consist in vertical series of windows--mostly _ajimeces_ or twin-windows--some with the horseshoe, others the pointed arch, flanked on either side by broad vertical bands of beautiful stone tracery, resembling trellis-work. The windows are enclosed in arches which exhibit considerable diversity of design. The decoration as a whole is harmonious and beautiful. The Moorish tower only reaches to a height of 70 metres. The remaining portion, reaching upwards for another 25 metres, is of Christian workmanship. Before this was added, the tower appears to have been crowned, like most West African minarets, by a small pinnacle or turret. This supported four balls or apples of gilded copper, one of which was so large that the gates of Seville had to be widened that it might be brought into the city. The iron bar which supported the balls weighed about ten hundredweights, and the whole was cast by a Sicilian Arab named Abu Leyth, at a cost of £50,000 sterling. We owe these particulars to a Mohammedan writer of the period, and his accuracy was confirmed in 1395, when the balls, having been thrown to the ground by an earthquake, were carefully weighed and examined. The upper or newer part of the Giralda was built by Fernando Ruiz in 1568. Despite its Doric and Ionic columns and Renaissance style, it does not mar the beauty and harmony of the whole building, and is itself a remarkably graceful work. The entablature of the second stage or storey bears the words _Turris fortissima Nomen Domini_. The whole fabric is surmounted by the bronze statue of Faith, executed by Bartolomé Morel in 1568. It stands fourteen feet high, and weighs twenty-five hundredweights, yet so wonderful is the workmanship that it turns with every breath of the wind. Hence the name applied to the whole tower--Giralda--from _que gira_, “which turns.” The figure wears a Roman helmet. The right hand clasps the labarum of Constantine, and the left a palm branch symbolical of victory.