Allt-yr-yn (Welsh: Allt-yr-ynn) is a suburb of the city of Newport, south-east Wales. Pronounced by English-speaking locals as "Olt-er-reen", the spelling should include two Ns at the end, as "Allt-yr-ynn". The name means "The slope (allt) of the ash trees (ynn which is the plural of onnen – ash tree)" in Welsh. Towards the City Centre, Allt-yr-yn is home to the offices of Newport City Council, at the Civic Centre, of which its clock tower can be seen for miles around. A permanent military presence was established in the area with the completion of the Cavalry Barracks in 1845.