The exterior began to show signs of decay. The interior, too, had changed with the inexorable trend of the times. The solemn recesses were filled with precious relics. Many hued tapers surrounded the glorious pillars, and eastern tapestries wreathed their fringes round the massive altars. As Tristan entered the incense-saturated dusk of St. Peter's, the first part of the service had just been concluded. The last faint echoes from the voices in the choir still hovered upon the air, and the silent crowds of worshippers were still grouped in their listening attitudes and absorbed in their devotions. The only light was bestowed by the evening sun, duskily illuminating the emblazoned windows, or by the glimmer of lamps in distant shrines, hung with sable velvet and attended each by its own group of ministering priests. Struck with an indefinable awe Tristan looked about. At first he only realized the great space, the four long rows of closely set columns, and the great triumphal arch which framed the mosaics of the apse, where Constantine stood in the clouds offering his Basilica to the Saviour and St. Peter. Then he looked towards the sacred shrines above the Apostle's grave, where lamps burned incessantly and cast a dazzling halo above the high altar, reflected in the silver paving of the presbytery and on the golden gates and images of the Confessio. Immediately behind the altar was revealed a long panel of gold, studded with gems and ornaments, with figures of Christ and the Apostles, a native offering from the Emperor Valentinian III. The high altar and its brilliant surroundings were seen from the nave between a double row of twisted marble columns, white as snow. A beam covered with plates of silver united them and supported great silver images of the Saviour, the Virgin and the Apostles with lilies and candelabra. To their shrines, to do homage, had in time come the Kings from all the earth: Oswy, King of the Northumbrians, Cædwalla, King of the West Saxons, Coenred, King of the Mercians, and with him his son Sigher, King of the East Saxons. Even Macbeth is said to have made the pilgrimage. Ethelwulf came in the middle of the ninth century, and with him came his son Alfred. In the arcades beneath the columned vestibule of the Basilica, tomb succeeded tomb. Here the popes were buried, Leo I, the Great, being first in line, the Saxon Pilgrim Kings, the Emperors Honorius III and Theodosius II, regarding whom St. John Chrysostomus has written: "Emperors were proud to stand in the hall keeping guard at the fisherman's door."