The presbytery occupies the space between the tower and the Wallingford screen, and retains its Norman walls as far as the third bay. The rest is the work of Abbot John de Hertford (1235-1260). The style is Early English. Before us is the famous Wallingford screen or reredos, erected by Abbot William Wallingford (1476-1484), which resembles that at Winchester. It was much mutilated, and has very recently been thoroughly restored, and the niches filled with statuary. There is a fine figure of our Lord in the centre, with the Virgin and St. John on either side, surrounded by angels. Below are the twelve Apostles with our Lord in the midst. On either side are figures of saints and kings connected with the history of the Abbey. On the north is the Chantry of Abbot Ramryge (1521), which has some rich Perpendicular work; the abbot's rebus--_rams_ with _ryge_ on the necks--may be discovered. Notice the representation of the martyrdom of St. Alban over the door. On the south is the Chantry of Abbot Wheathampstead (1464), which has a fine brass (that of Abbot Thomas de la Mare), and bears his arms (three ears of corn with the motto _Valles habundabunt_). Some attribute this tomb to Abbot Wallingford, but the details seem to point to Wheathampstead. This abbot caused the ceiling to be painted whereon are depicted the _Agnus Dei_ and the Eagle of St. John. There are numerous tombs and brasses of other abbots here. The south door has some fine Early English tabernacle work. The architecture of the adjoining _North Aisle_ corresponds with that of the presbytery, and through it we pass to the _Saints' Chapel_, which is the work of Abbot John de Hertford and his successors, and may well be described by Sir G. Scott as being "among the finest productions of that period." On the east side of the reredos are some fine modern statues of the Virgin and other saints. Here is the famous _Shrine of St. Alban_, broken and destroyed at the Reformation, and now happily built up again, the fragments having been collected by careful hands from many parts of the building. It was first erected by Abbot John de Marynis (1302-1308), and is of Decorated style. Gorgeous must have been its original appearance; but though shorn of all its jewels, gold and silver, it remains a noble piece of work. The holes in the panels of the base were intended for the insertion of diseased limbs, in order that they might be healed by the merits of the saint. The carved leafage in the tympana of the canopied niches is admirable. Only two carved figures remain, those of Offa and St. Oswin. On the west we see a representation of the martyrdom of the saint, and at the east his scourging. On the north side of the chapel is the _Watching Tower_, a wooden structure, probably erected by Abbot John de Wheathampstead. This and a similar one at Christ Church, Oxford, are the only watching towers remaining. A monk was stationed here to guard the treasures of the shrine. There