The Faces I See--City Hall, Cork

Tuesday mornings I walk the opposite direction of campus to the School of Architecture for a module on historical conservation. During the 20 something minute walk to class I pass by city hall. It's an expansive building, taking up a few city blocks along the harbor. A quick Google search told me that the current building replaced the old structure that was destroyed during the burning of Cork, but the search did not answer my initial question I had set out of find. Who are the faces on city hall?