Besides the Church of St. Regulus, there are still to be seen the ruins of the great Cathedral of St. Andrews, which consisted of a short aisleless presbytery, and choir of five bays with side aisles, with an eastern chapel in each aisle; north and south transepts, each of three bays with eastern aisles; nave of twelve bays with north and south aisles, and a large central tower over the crossing. The interior dimensions were--total length, 355 feet; width of nave, 63 feet; length of transepts, 167 feet 6 inches; width, 43 feet 2 inches. The older parts of the Cathedral exhibit traces of the transition from the Norman architecture, but the principal parts of the structure have been carried out in the First Pointed style.[42] The Cathedral Church was also the Conventual Church of the Austin-canons, and the Bishop was _ex officio_ prior of the monastery. Of the conventual buildings erected by Bishop Robert nothing remains. The Cathedral was erected from east to west in about 115 years.[43] The work was commenced by Bishop Arnold in 1161, was continued by eleven successive bishops, and was consecrated by Bishop Lamberton in 1318. During its progress in 1276, the eastern end was greatly injured by a violent tempest, and in 1378 the Cathedral suffered from fire, which according to Wyntoun destroyed the south half of the nave from the west end, and eastward to and including the ninth pillar. The restoration was begun at once by Bishop Landel (1341-1385), and completed in the time of Bishop Wardlaw (1404-1440), who in 1430 improved the interior by the introduction of fine pavements in the choir, transept, and nave, and by filling the nave with stained glass and building a large window in the eastern gable. The south wall of the nave extends considerably westwards beyond the present west end, and contains the remains of a vaulting shaft, leading to the inference that the Cathedral was originally of greater length than it now is by at least 34 feet. The north wall of nave also projects westwards about 7 feet. There is a difficulty in connection with the west front, and it is regarded by competent authorities that this wall was not part of a western porch, but "indicates that there has been a change in the design, and that the original intention of having a wide porch extending along the whole of the west end has been departed from after the first story was built up to the level of the above string course, all above that point being of later design and execution."[44]