The Amazon rainforest, covering much of northwestern Brazil and extending into Colombia, Peru, Bolivia, Guyana, Venezuela, Ecuador, French Guinea and Suriname, is the world’s largest tropical rainforest, famed for its biodiversity. It’s crisscrossed by thousands of rivers, including the powerful Amazon. River towns, with 19th-century architecture from rubber-boom days, include Brazil’s Manaus and Belém and Peru’s Iquitos and Puerto Maldonado.The Amazon represents over half of the planet's remaining rainforests, with an estimated 390 billion individual trees divided into 16,000 species.

More than 30 million people of 350 different ethnic groups live in the Amazon, which are subdivided into 9 different national political systems and 3,344 formally acknowledged indigenous territories. Indigenous peoples make up 9% of the total population with 60 of the groups remaining largely isolated.

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