St. Mary Axe was a medieval parish in the City of London whose name survives as that of the street which it formerly occupied. The Church of St Mary Axe was demolished in 1561 and its parish united with that of St Andrew Undershaft, which is situated on the corner of St. Mary Axe and Leadenhall Street. The site of the former church is now occupied by Fitzwilliam House, a fact acknowledged by a blue plaque on the building's façade. Nearby parishes include the medieval Great St. Helen's (1210) and St.