The second longest river on the planet, the Amazon boasts the world's most vast watershed, with the greatest number of tributaries and volume of water. It is also one of the earth's widest rivers, up to six miles across in some places. The Amazon begins in the Peruvian Andes and flows eastward, briefly touching Colombia before continuing its long course throughout Brazil. Tour the Amazon to see the lush tropical rainforest with its abundance of exotic animals, become acquainted with local cultures and partake in excursions ranging from hiking to piranha fishing.