WM15) This is the picture of Custom House in Dublin, an architecturally important building in Dublin. Who was the architect of this building? सहि उत्तर c) James Gandon James Gandon (1743-1823) - Brief biography from Arch?ire of the architect responsible for some of Dublin's most important buildings including the Custom House, the Four Courts, the additions to the Houses of Parliament and the Kings Inns.