The Royal Chapel, although the oldest part of the building, should be considered last of all, as it is by far the most interesting portion and leaves an impression so vivid as to overshadow all other parts of the great edifice. It is situated between the sagrario and the Sacristia and is entered through the southern arm of the transept. The chapel itself is the very last Gothic efflorescence from which the spirit has fled, leaving only empty form. It consists of a single big nave flanked by lower chapels. The ornamentally ribbed vaulting with gilt bosses and keystones is carried by clustered shafts engaged in its side walls. The shafts are too thin and the capitals too meagre. A broader and more generous string course runs, at the height of the capitals, across the wall surfaces between the upper clerestory and the lower arcades. Portions of this reveal a strong Moorish influence, as the manner in which the great Gothic lettering is employed to decorate the band. Similarly to the invocations to Allah running round the walls of the Alhambra, we read here that "This chapel was founded by the most Catholic Don Fernando and Doña Isabel, King and Queen of the Españos[d], of Naples, of Sicily, and Jerusalem, who conquered this kingdom and brought it back to the faith, who acquired the Canary Isles and Indies, as well as the cities of Ican, Tripoli, and Bugia; who crushed heresy, expelled Moors and Jews from these realms, and reformed religion. The Queen died Tuesday, November 26, 1504. The King died January 25, 1516. The building was completed 1517." Enrique de Egas had, at Ferdinand's order, commenced building two years after Isabella's death. The grandson enlarged it later, finding it "too small for so much glory."