 The skull of Saint Peter is claimed to reside in the Archbasilica of Saint John Lateran since at least the ninth century, alongside the skull of Saint Paul.A tomb had been discovered at the beginning of the 16th century, when the foundations were being laid for the four twisted columns of Gian Lorenzo Bernini's "Confessio".Construction of Constantine's Old St. Peter's Basilica and of foundations for Bernini's "Baldacchino" destroyed most of the vaulting of these semi-subterranean burial chambers.