s ▁established ▁garden ▁setting . ▁Loc ated ▁to ▁the ▁south ▁of ▁Ross ▁O val ▁are ▁the ▁earliest ▁college ▁buildings ▁including ▁the ▁Main ▁Building , ▁the ▁Chap el ▁and ▁the ▁Dun ne ▁Building . ▁Sub st ant ial ▁m ason ry ▁edific es ▁in ▁an ▁impos ing ▁Italian ate ▁style , ▁these ▁buildings ▁are ▁prominent ▁land marks ▁and ▁the ▁most ▁visible ▁part ▁of ▁the ▁school ▁from ▁the ▁surrounding ▁streets . ▁Initial ly ▁building ▁work ▁was ▁concentr ated ▁in ▁this ▁area ▁but ▁over ▁time ▁has ▁spread ▁to ▁the ▁south ▁and ▁east ▁of ▁the ▁main ▁group ▁of ▁buildings . ▁ ▁Main ▁Building ▁( C ot ter ▁and ▁O ' B rien ▁Res id ences ) ▁ ▁F acing ▁west ▁towards ▁Sand gate ▁Road , ▁the ▁Main ▁Building ▁is ▁a ▁large ▁three - ▁store y ▁rendered ▁m ason ry ▁building ▁linked ▁by ▁a ▁colon na de ▁to ▁the ▁ad jo ining ▁Chap el . ▁Through ▁its ▁size , ▁prominent ▁position ▁and ▁impos ing ▁Renaissance ▁Rev ival ▁style ▁architecture ▁the ▁Main ▁Building ▁domin ates ▁the ▁built ▁landscape ▁of ▁the ▁school . ▁ ▁The ▁formal ▁entrance ▁to ▁the ▁school , ▁the ▁T C ▁Be ir ne ▁Memorial ▁Gate , ▁is ▁located ▁directly ▁in ▁front ▁of ▁the ▁Main ▁Building . ▁Cons isting ▁of ▁stone ▁pill ars ▁sur mount ed ▁by ▁cross es ▁and ▁fitted ▁with ▁wr ought ▁iron ▁gates , ▁it ▁leads ▁to ▁a ▁circular ▁drive ▁that ▁div ides ▁the ▁la wn ▁in ▁front ▁of ▁the ▁Main ▁Building . ▁The ▁f ence ▁ad jo ining ▁the ▁T C ▁Be ir