The first bay in the south aisle of St John’s gives access to the Cathedral Museum . The first room is the Oratory, built in 1603 as a place of worship and for the instruction of novices. It is dominated by the altarpiece, The Beheading of St John the Baptist (c 1608) by Caravaggio, one of the artist’s most famous and accomplished paintings. The executioner – reaching for a knife to finish off the job that his sword began – and Salome with her platter are depicted with chilling realism (note that the artist signed his name in the blood seeping from St John’s severed neck). On the east wall hangs St Jerome, another of Caravaggio’s masterpieces.
