Donated by then Archbishop of Armagh, Lord John Beresford it was designed by Sir Charles Lanyon, sculpted by Thomas Kirk and finished in 1853.

The lower portion of the Campanile is composed of a fine-grained bluish granite from Blessington, County Wicklow, while the upper cupola is made of Portland Stone.

These keystones each have detailed carved heads, which depict Homer, Socrates, Plato and Demosthenes - representing the liberal arts.

At the corners of the campanile, seated and supported by this circular base are the Higher Faculties represented in four deceptive figures of Divinity, Science, Medicine and Law sculpted from portland stone by Irish sculptor Thomas Kirk.

[1] The belfry is a cylindrical chamber encircled by Corinthian columns, between which are tall, round-head traceried windows with cast iron grills.

Each coat of arms faces out onto a prominent location in the college, and symbolize strong connections it had with external forces.