Gloucester Cathedral, in the north of the city near the river, originates in the foundation of an abbey dedicated to Saint Peter in 681. It is the burial place of King Edward II and Walter de Lacy. The cathedral (mainly its cloisters) was used for corridor scenes in the films "Harry Potter and the Philosopher's Stone", "Harry Potter and the Chamber of Secrets" and "Harry Potter and the Half Blood Prince". The crypt was used for a scene in "Sherlock Christmas special". Attached to the deanery is the Norman prior's chapel. In St Mary's Square outside the Abbey gate, the Bishop of Gloucester, Bishop John Hooper, was martyred under Queen Mary I in 1555.