See all Attractions in Posadas Posadas for: Adventure, Food And Dining, Art And Culture, Nightlife, Spa, History, First Timers, Family, Romance, Shopping Trinidad, Itapua, Paraguay Trinidad, Paraguay About Founded in the 17th century by the Jesuits, the missions in Paraguay are a must-see for all tourists heading to this part of the country. They were declared World Heritage Sites in 1993. Add to Wish List