Financed by gold from Chico-Rei’s mine and built by the slave community, this mid-18th-century church honors Santa Efigênia, princess of Nubia. The exterior image of NS do Rosário is by Aleijadinho. Slaves legendarily contributed to the church coffers by washing their gold-flaked hair in baptismal fonts, or smuggling gold powder under fingernails and inside tooth cavities.