Despite its early exploration, the area remained occupied only by the Guaraní Indians until 1880. Corrientes Province, which at that time included what is now Misiones, sold 50 square leagues () at the current site of Puerto Iguazú near the falls in 1881. The land changed hands three times in the course of just two years, and ended up as the property of Gregorio Lezama. At that time Misiones separated from Corrientes. Lezama funded a scientific expedition to explore the territory, enlisting Carlos Bosetti and Jordan Hummel for that purpose. Those two explorers later organized the first tourist trip to the falls; Lezama sold the land in 1888 to Martín Errecaborde and Company.