The building here was designed by William Deane Butler and built in an Italinate style out of Wicklow granite and was opened as the head office of the D&DR in 1846. The centrepiece of this is the tower straddling the entrance, originally intended as a lookout tower. At the foot of this are two shields, one either side of the tower. That on the right bears the Dublin City shield of three castles while that on the left bears the shield of Drogheda.