The Amazon River is the longest, widest river, with the greatest volume of water, in the world. Forming part of Brazil’s mighty Amazon basin, Peru’s Amazonia is a maze of waterways and lagoons. The source of the Amazon lies in the Peruvian Andes, where it has a journey of some 6,762 km to the mouth of the Atlantic Ocean, where fresh water can still be tasted 100 km out to sea!