The church, as restored and added to after 1387, would then consist (Fig. 824)[159] of a choir of four bays, with side aisles; a nave of five bays, also with side aisles; a central crossing, north and south transepts, and the five chapels just added south of the nave. A large open porch, to the south of the central one of those chapels, was also erected along with them. It had a finely groined vault in the roof, and over it was a small chamber, [Illustration: FIG. 824.--St. Giles’ Collegiate Church. Plan.] lighted by a picturesque oriel window, supported on a corbel, carved with an angel, displaying the city arms (Fig. 825).[160] The upper story, which is supposed to have been the revestry, was reached by a bold turret stair on the west side of the south porch. The whole of the main divisions of the structure were vaulted; but the vault of the central aisles was low, being little higher than that of the side aisles. The massive octagonal piers of the crossing appear to have been raised about this period. The traces of the caps, which were cut off, are visible at a lower level (Fig. 826), and the few courses of ashlar work above them, with the new caps at the heightened level, may be traced as additions (Fig. 827). The vaulting of the crossing, with its central opening, was, doubtless, executed during the restoration of about 1400. The ancient Norman porch, which formed the north entrance to the nave, was the only part of the twelfth century structure then preserved, and a small chamber was erected above it, with a narrow turnpike stair leading to it. The restoration seems to have been in progress for a considerable length of time. Donations from the Crown towards it continued to be given till 1413. It was probably completed about 1416. [Illustration: FIG. 825.--St. Giles’ Collegiate Church. Oriel originally over South Porch.] Shortly after the erection of the five chapels on the south side of the nave, another chapel was built on the north side of the nave, to the [Illustration: FIG. 826.--St. Giles’ Collegiate Church. South Piers of Crossing.] west of the old Norman doorway. This chapel, called the Albany aisle (Fig. 828), is 32 feet long by 12 feet in width. It opens from the nave [Illustration: FIG. 827.--St. Giles’ Collegiate Church. North Piers of Crossing.] [Illustration: FIG 828.--St. Giles’ Collegiate Church. The Albany Aisle.]