Like Iquitos, Santiago de Lagunas (to give the full name) is a jungle town founded by missionaries, in the Amazonian province of Loreto; and like Iquitos, it is a jumping-off point for visiting the surrounding rainforest, especially the Pacaya-Samiria Reserve.
But, even though Lagunas is nearly 100 years older than Iquitos, having been founded in 1670 by a priest, Juan Lorenzo Lucero, it has a fraction of the population and receives a fraction of the visitors.