ar . ▁The ▁dom ed ▁semi - circ ular ▁n iche ▁which ▁houses ▁the ▁mar ble ▁high ▁alt ar ▁is ▁painted ▁various ▁sh ades ▁of ▁blue . ▁Single ▁store y ▁b ays ▁are ▁attached ▁to ▁the ▁sides ▁of ▁the ▁main ▁space ▁adjacent ▁to ▁the ▁western ▁end . ▁The ▁northern ▁bay ▁contains ▁a ▁mar ble ▁alt ar ▁and ▁opens ▁onto ▁the ▁main ▁space ▁through ▁two ▁arch es ▁located ▁between ▁pil aster s . ▁The ▁southern ▁bay ▁contains ▁a ▁room ▁accessed ▁via ▁tim ber ▁doors . ▁ ▁Form er ▁Dun ne ▁( D uh ig ) ▁Building ▁ ▁The ▁Form er ▁Dun ne ▁building , ▁a ▁rect angular ▁m ason ry ▁building ▁with ▁a ▁t iled ▁g able ▁roof , ▁consists ▁of ▁an ▁under cro ft ▁with ▁three ▁store ys ▁of ▁class rooms ▁above . ▁Loc ated ▁to ▁the ▁east ▁of , ▁but ▁in ▁line ▁with , ▁the ▁Chap el , ▁it ▁faces ▁North umb ria ▁Road ▁across ▁Ross ▁O val . ▁Cont inu ing ▁the ▁architect ural ▁style ▁established ▁by ▁the ▁Main ▁Building ▁and ▁the ▁Chap el , ▁the ▁Dun ne ▁Building ▁has ▁an ▁arch ed ▁ar cade ▁on ▁either ▁side ▁of ▁a ▁project ing ▁central ▁bay ▁and ▁an ▁attached ▁semi - oct ag onal ▁st air ▁tower ▁as ▁the ▁principal ▁features ▁of ▁its ▁main ▁or ▁northern ▁fac ade . ▁ ▁The ▁rendered ▁m ason ry ▁walls ▁of ▁the ▁ar cade ▁are ▁detailed ▁with ▁simple ▁pl aster ▁m ould ings . ▁Class ical ▁bal ust ers ▁form ▁the ▁bal ust rade ▁between ▁the ▁arch