uden ▁( lit . ▁" H all ▁of ▁Bud d ha ", ▁i . e . ▁the ▁main ▁hall ). ▁It ▁used ▁to ▁be ▁connected ▁to ▁a ▁port ico - like ▁structure ▁called ▁, ▁which ▁however ▁gradually ▁disappeared ▁during ▁the ▁Mur om achi ▁period , ▁being ▁replaced ▁by ▁the ▁, ▁a ▁small ▁building ▁present ▁on ▁both ▁sides ▁of ▁the ▁gate ▁and ▁containing ▁a ▁st air way ▁to ▁the ▁gate ' s ▁second ▁story . ▁( B oth ▁san r ō ▁are ▁clearly ▁visible ▁in ▁T ō fu ku - ji ' s ▁photo ▁above .) ▁ ▁The ▁san mon ' s ▁size ▁is ▁an ▁indicator ▁of ▁a ▁Z en ▁temple ' s ▁status . ▁Struct ur ally , ▁the ▁san mon ▁of ▁a ▁first ▁rank ▁temple ▁as ▁N anzen - ji ▁in ▁Ky oto ▁is ▁a ▁two - stor ied , ▁ 5 x 2 ▁bay , ▁three ▁entrance ▁gate ▁( see ▁photo ▁below ). ▁Its ▁three ▁gates ▁are ▁called ▁, ▁ ▁and ▁ ▁and ▁symbol ize ▁the ▁three ▁gates ▁to ▁en light en ment , ▁or ▁s atori . ▁Enter ing , ▁pil gr ims ▁can ▁symbol ically ▁free ▁themselves ▁from ▁the ▁three ▁pass ions ▁of ▁, ▁, ▁and ▁. ▁The ▁fact ▁the ▁gate ▁has ▁ent ran ces ▁but ▁no ▁doors , ▁and ▁cannot ▁therefore ▁be ▁closed , ▁emphas izes ▁its ▁purely ▁symbol ic ▁function ▁as ▁a ▁limit ▁between ▁the ▁sacred ▁and ▁the ▁prof ane . ▁ ▁A ▁temple ▁of ▁the ▁second ▁rank ▁will ▁have ▁a ▁two - stor ied , ▁