▁by ▁deep ▁g org es . ▁The ▁only ▁exception ▁to ▁its ▁natural ▁protection ▁was ▁ ▁on ▁the ▁south - west ▁where ▁it ▁was ▁def ended ▁by ▁walls , ▁the ▁line ▁of ▁which ▁is ▁necessarily ▁followed ▁by ▁those ▁of ▁the ▁modern ▁town . ▁The ▁arrangement ▁of ▁the ▁modern ▁streets ▁pres erves ▁that ▁of ▁the ▁ancient ▁town , ▁and ▁the ▁disposition ▁of ▁the ▁w alled ▁paths ▁which ▁divide ▁the ▁plain ▁to ▁the ▁east ▁seems ▁to ▁date ▁in ▁like ▁manner ▁from ▁Roman ▁times . ▁No ▁ru ins ▁are ▁now ▁preserved ▁in ▁the ▁town ▁itself , ▁but ▁there ▁are ▁many ▁remains ▁in ▁the ▁villa ▁quarter ▁to ▁the ▁east ▁of ▁the ▁town ▁on ▁the ▁road ▁to ▁St ab iae , ▁of ▁which ▁traces ▁still ▁exist , ▁running ▁much ▁higher ▁than ▁the ▁modern ▁road , ▁across ▁the ▁mountain ; ▁the ▁site ▁of ▁one ▁of ▁the ▁largest ▁( poss ibly ▁belonging ▁to ▁the ▁Imperial ▁house ) ▁is ▁now ▁occupied ▁by ▁the ▁Hotel ▁Victoria , ▁under ▁the ▁terra ce ▁of ▁which ▁a ▁small ▁theatre ▁was ▁found ▁in ▁ 1 8 5 5 ; ▁an ▁ancient ▁rock - cut ▁tunnel ▁desc ends ▁hence ▁to ▁the ▁shore . ▁Rem ains ▁of ▁other ▁vill as ▁may ▁be ▁seen , ▁but ▁the ▁most ▁important ▁ru in ▁is ▁the ▁res er voir ▁of ▁the ▁( sub ter rane an ) ▁aqu ed uct s ▁just ▁outside ▁the ▁town ▁on ▁the ▁east , ▁which ▁had ▁no ▁less ▁than ▁twenty - se ven ▁ch amb ers ▁each ▁about ▁. ▁Greek ▁and ▁O scan ▁tomb s ▁have ▁also ▁been