BUENOS AIRES HISTORIC CENTERBuenos Aires, ArgentinaThe first permanent European settlement on the site of modern-day Buenos Aires was founded in 1580 by Spanish conquistador Juan de Garay. (Learn More) JESUIT GUARAN?? MISSIONSSeveral towns, ArgentinaBeginning in the seventeenth century, the Jesuit Order founded a series of thirty missions in the lush rainforest of what is now Argentina, Brazil, an