It was designed in 1878 to stand 308feet. Its base is 24ft square with walls 4ft thick. The spirelettes which stand guard at the top of the. tower and base of the spire are 30ft high. The stone for the tower was quarried at Rosbrien and is limestone. The tower is the tallest in the country and from each approach to the city of Limerick, the spire represents itself, standing out against the horizon or nestling against the back drop of the Clare hills. The floodlighting was installed in 1986 and replaced during the restoration in 2003 and this brings a new visual dimension to the city at night time.