From the high altar we look down to the west end, and see above the choir screen the painted glass of the west window which was inserted in the reign of George II. To our right is the tomb of Aymer de Valence, and the smaller contemporary monument of the first bride ever married in the Abbey, Aveline, Countess of Lancaster. In the foreground is the ancient mosaic pavement, which was laid in the thirteenth century, when this part of the church was built; and beyond the altar rails we see the comparatively modern stalls of the choir and the still more recent organ case. The pulpit marks the intersection of the sanctuary with the north transept.