Archaeoastronomical study of Andean temples in Arica and Parinacota, Chile

After a historical and cultural overview of the "Indian republic", the Andean religiosity and the churches of the highlands of Arica, we detail our archaeoastronomical studies on the orientations of the Andean Christian churches in the region of Arica and Parinacota, and analyze some preliminary results. We conclude with a brief discussion on the patterns of orientation found in our measurements and on their possible causes.