The Church of Scotland Presbytery of Dundee is responsible for overseeing the worship of 37 congregations in and around the Dundee area, although changing population patterns have led to some of the churches becoming linked charges. Due to their city centre location, the City Churches, Dundee Parish Church (St Mary's) and the Steeple Church, are the most prominent Church of Scotland buildings in Dundee. They are on the site of the medieval parish kirk of St Mary, of which only the 15th-century west tower survives. The attached church was once the largest parish church in medieval Scotland.