The church is divided within into a sombre mysterious nave and narrow aisles. For some reason, probably because the winds are so high, the architect was unable to build the flying buttresses and intervening chapels which adorn almost all cathedrals, nor are there openings of any kind in the walls which support the weight of the roof. Outside there is simply the heavy wall structure, a solid mass of grey stone further strengthened by huge piers placed at intervals. Inside, the nave and its little side galleries are lighted entirely by the great stained-glass rose-window suspended by a miracle of art above the centre doorway; for upon that side the exposure permits of the display of lacework in stone and of other beauties peculiar to the style improperly called Gothic. The larger part of the nave and aisles was left for the townsfolk, who came and went and heard mass there. The choir was shut off from the rest of the church by a grating and thick folds of brown curtain, left slightly apart in the middle in such a way that nothing of the choir could be seen from the church except the high altar and the officiating priest.