sentences:  Covering an area of about 5 hectares, Dubhlinn was one of the largest settlements of its kind in the country, and shared its distinctive pear-shaped outline with hundreds of other ecclesiastical or quasi-ecclesiastical enclosures of the time.This outline can still be discerned in the morphology of the modern city, especially in the oval configuration of St Peter's Row, Whitefriar Street, Upper and Lower Stephen Street, and Johnson's Place.In later centuries, this area was served by the local parish church of St Peter's on The Mount, which may have replaced a much earlier church.