What does 55 gallons of water per second look like? The Amazon River, that’s what! The Amazon is THE largest body of freshwater rivers in the world. The Amazon snakes through many countries, but the largest portion is in Peru, which is in South America. When exploring the Amazon River you’re likely to see brightly colored birds, such as parrots and macaws, as well as towering trees, exotic flowers, and some of the most unusual wildlife to be found on the planet.