. ▁The ▁remaining ▁part ▁compr ises ▁hills ▁part ▁of ▁the ▁Mont i ▁Pic ent ini ▁Regional ▁Park . ▁ ▁E bol i ▁borders ▁with ▁Alban ella , ▁Batt ip aglia , ▁Camp agna , ▁Cap ac cio , ▁O lev ano ▁sul ▁T us ci ano ▁and ▁Ser re . ▁Its ▁ham lets ▁( f raz ioni ) ▁are ▁Camp ol ongo , ▁C io ff i , ▁Cor no ▁d ' oro , ▁F i oc che , ▁Santa ▁Cec ilia ▁and ▁Ta ver na ▁Nova . ▁ ▁Main ▁s ights ▁ ▁The ▁main ▁att raction ▁is ▁the ▁Col onna ▁castle ▁( 1 1 th ▁century ). ▁Sc ant y ▁remains ▁of ▁the ▁ancient ▁pol yg onal ▁walls ▁( 4 th ▁century ▁BC ) ▁can ▁still ▁be ▁seen , ▁as ▁well ▁as ▁of ▁a ▁Roman ▁imperial ▁villa ▁in ▁the ▁local ity ▁of ▁Pat erno . ▁E bol i ▁is ▁also ▁home ▁to ▁several ▁ 1 5 th - 1 6 th ▁century ▁pal az zi . ▁ ▁The ▁sac rist y ▁of ▁St . ▁Francis ▁contains ▁two ▁ 1 4 th ▁century ▁pictures , ▁one ▁by ▁Roberto ▁da ▁O der is io ▁of ▁Nap les . ▁Also ▁notable ▁is ▁the ▁Bad ia ▁( Ab bey ) ▁of ▁San ▁Pietro ▁al li ▁Mar mi ▁( 1 0 7 6 ). ▁ ▁Culture ▁A ▁local ▁saying , ▁Crist o ▁si ▁è ▁ferm ato ▁a ▁E bol i ▁(' Christ ▁stopped ▁at ▁E bol i '), ▁was ▁used ▁by ▁ 2 0 th - century