Santa María la Mayor
Santa María, Argentina
Reducción de Santa María la Mayor (Reduction of Holy Maria Major), located in the Santa María Department of the Misiones Province, Argentina, was one of the missions or reductions founded in the 17th century by the Jesuits in the Americas during the Spanish colonial period. In 1984 it was one of four reduction sites in Argentina designated as World Heritage Sites by UNESCO.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).