▁ 1 ▁and ▁ 3 % ▁of ▁the ▁inhabitants ▁in ▁Il le - et - V ila ine ▁and ▁Lo ire - At lant ique . ▁ ▁Culture ▁ ▁Architecture ▁ ▁Brit t any ▁is ▁home ▁to ▁many ▁meg al ith ic ▁monuments ; ▁the ▁words ▁men h ir ▁and ▁dol men ▁come ▁from ▁the ▁Bre ton ▁language . ▁The ▁largest ▁men h ir ▁align ments ▁are ▁the ▁Car n ac ▁stones . ▁Other ▁major ▁sites ▁include ▁the ▁Bar n enez ▁c air n , ▁the ▁Loc mar ia quer ▁meg al ith s , ▁the ▁Men h ir ▁de ▁Champ - D ol ent , ▁the ▁M ane ▁Bra z ▁tum ulus ▁and ▁the ▁G av rin is ▁tomb . ▁Mon uments ▁from ▁the ▁Roman ▁period ▁are ▁rare , ▁but ▁include ▁a ▁large ▁temple ▁in ▁Cor se ul ▁and ▁scar ce ▁ru ins ▁of ▁vill as ▁and ▁city ▁walls ▁in ▁R ennes ▁and ▁N antes . ▁ ▁Brit t any ▁has ▁a ▁large ▁number ▁of ▁medieval ▁buildings . ▁They ▁include ▁numerous ▁Roman es que ▁and ▁French ▁Goth ic ▁churches , ▁usually ▁built ▁in ▁local ▁sand stone ▁and ▁gran it , ▁cast les ▁and ▁half - tim ber ed ▁houses ▁visible ▁in ▁villages , ▁towns ▁and ▁cities . ▁Several ▁Bre ton ▁towns ▁still ▁have ▁their ▁medieval ▁walls , ▁such ▁as ▁Gu é ran de , ▁Con car ne au , ▁Saint - M alo , ▁V annes , ▁F oug ères ▁and ▁Din an . ▁Major ▁churches ▁include ▁Saint - Pol - de