However over the course of history there have been some grand domes. The Pantheon in Rome with the largest dome in the world, with a diameter of 43.3 metres and built between 118 and 125 AD by emperor Hadrian. This building was frequently illustrated and this is how Wren learnt about Roman and Italian architecture. The next greatest dome could be the one in Hagia Sophia in Istanbul, with a span of 31 metres, but with its attached half-domes on each side enclosed much more space the Pantheon. It was built by the emperor Justinian in 532- 537 AD. Both structures inspired the Renaissance and its first great architect Brunelleschi, whose greatest work had been the dome of Florence Cathedral. His dome was composed of two shells of bricks, one inside the other, joined together by ribs of brick and strengthened wooden chains. Then next greatest dome that was built before St Paul’s was St Peter’s Basilica in Rome. Imitating Brunelleschi’s work, consisted of two shells closely linked by ribs which were cut completely out of stone . After studying Brunelleschi’s work, Wren came up with a triple dome structure he used in his …show more content…
Three skulls indicate the entrance to the crypt, the burial chamber of the cathedral. The Victorians began the tradition in which the crypt should be viewed, therefore replaced the plain earth ground floor where the coffins were buried with a stone placed on top, for a proper floor that was laid. E.M Cummings provides some information in respect to the crypt in his 1849 book: “The crypt, like the body of the cathedral is divided into three avenues by massive pillars, forty feet square. It is comfortably warm and dry, and with the exception of the area underneath the dome, it is tolerably well lighted and ventilated by windows opening into the church-yard” . Furthermore he indicates that the crypt under the eastern part of the old St Paul’s was used for “ the divine