Pichilemu has become the historic capital of the province called Cardenal Caro which is named for the first Chilean Catholic Church Cardinal . After the creation of the Cardenal Caro Province , by decree of General Augusto Pinochet on October 3 , 1979 , Pichilemu became its capital . The province is named after the first Chilean Catholic Cardinal , JosÃ MarÃ a Caro RodrÃ guez , who was born in Pichilemu .