You may spot Copiapo Cathedral from a distance before you actually find this grand place of worship. Pop inside if the doors are open or just appreciate the facade from the street.
This principal church in Copiapó comes recommended by many travelers, so make a spot for it on your schedule. However, your day doesn't end there. There are loads more spots waiting for you to explore after Copiapo Cathedral. Termas Banos de Puritama, Atacama University, and Nuestra Senora de la Candelaria Parish are close by.