onal ▁structure ▁on ▁the ▁north ▁side ▁of ▁the ▁main ▁fac ade ▁originally ▁hous ed ▁the ▁bapt istry . ▁Its ▁exterior ▁walls ▁are ▁composed ▁of ▁Stone ▁City ▁lim estone . ▁A bove ▁the ▁main ▁entrance ▁is ▁a ▁large ▁pointed ▁arch ▁window ▁fl ank ed ▁by ▁two ▁smaller ▁pointed ▁arch ▁windows . ▁But tr esses ▁divide ▁the ▁side ▁elev ations ▁into ▁seven ▁b ays . ▁The ▁nave ▁is ▁marked ▁by ▁st ained ▁glass ▁windows ▁that ▁alternate ▁down ▁each ▁side ▁elev ation . ▁Lar ger ▁windows ▁are ▁located ▁in ▁the ▁b ays ▁with ▁wall ▁d orm ers . ▁The ▁b ays ▁in ▁between ▁have ▁pa ired ▁l anc et ▁windows . ▁The ▁back ▁wall ▁is ▁flat , ▁conce aling ▁the ▁rounded ▁ap se ▁within . ▁▁ ▁The ▁interior ▁features ▁a ▁ ▁rib ▁v ault ed ▁ce iling ▁that ▁is ▁supported ▁by ▁ten ▁heavy ▁hard wood ▁ham mer ▁be ams . ▁The ▁be ams ▁are ▁emb ell ished ▁with ▁t ref o il , ▁qu at ref o il , ▁and ▁circular ▁trac ery . ▁A ▁large ▁pointed ▁arch ▁frames ▁the ▁main ▁alt ar ▁area , ▁and ▁it ▁is ▁fl ank ed ▁by ▁two ▁smaller ▁arch es ▁that ▁frame ▁the ▁side ▁alt ars . ▁The ▁side ▁alt ar ▁on ▁the ▁right ▁has ▁a ▁statue ▁of ▁the ▁B less ed ▁Virgin ▁Mary , ▁and ▁the ▁one ▁the ▁left ▁a ▁statue ▁of ▁the ▁Sac red ▁Heart ▁of ▁Jesus . ▁On ▁the ▁ap se ▁ce iling ▁are ▁paint ings ▁of ▁nine ▁sain ts ▁added ▁during ▁the ▁ 1 9 5