About 2.2 million people.

Manaus is a big city deep in the Amazon rainforest, surrounded by rivers and jungle. It is the gateway for people who want to explore the wild green heart of Brazil.
You can see the amazing spot where two rivers of different colors meet without mixing, visit a grand old opera house, and spot pink river dolphins.
The world's biggest rainforest starts here, home to monkeys, parrots, and thousands of plants.
Two rivers, one dark and one sandy, flow side by side for miles without blending together.