 It remains so to the present, attracting large numbers of Christian pilgrims, many of whom come to venerate its famous relic, the "Sancta Camisa", said to be the tunic worn by the Virgin Mary at Christ's birth, as well as large numbers of secular tourists who come to admire the cathedral's architecture and historical merit.At least five cathedrals have stood on this site, each replacing an earlier building damaged by war or fire.The first church dated from no later than the 4th century and was located at the base of a Gallo-Roman wall; this was put to the torch in 743 on the orders of the Duke of Aquitaine.