Founded by a naturalist and a group of intellectuals in 1866, this complex contains one of the Amazon's most important research facilities. Its museum has an extensive collection of indigenous artifacts, including the distinctive and beautiful pottery of the Marajó tribes, known as marajoara. A small forest has reflecting pools with giant water lilies. But the highlight is the botanical zoo, where you can visit a variety of Amazon wildlife, including jaguars, panthers, manatees, anacondas, macaws, sloths, and monkeys. As of this writing, the aquarium is closed for renovation.