An Grianán of Aileach visitor numbers may be restricted by the Office of Public Works 'Visitors will have to view fort from main road', warns Cllr Paul Canning An Grianán of Aileach visitor numbers may be restricted by the Office of Public Works. Photo copyright Bren Whelan Reporter: '); '); Tourists and local people may have no option but to view An Grianán of Aileach Fort from the N13, which runs through the nearby village of Burt, if the Office of Public Works (OPW) gets its way. This was the fear expressed by Donegal Councillor Paul Canning (Fianna Fáil) at February's Inishowen Municipal District meeting.