Welcome to Ilha de Marajó
The 50,000-sq-km Ilha de Marajó, slightly larger than Switzerland, lies at the mouth of the Amazon River and is generally considered to be the largest river island in the world; writer Peter Matthiessen once described it as the Amazon's cork. (Some argue Marajó doesn't qualify because part of the island faces the open ocean.) It was the ancient home of the Marajoaras indigenous culture, notable for their large ceramic burial urns. Marajó remains a world apart, where bicycles outnumber cars and water buffalo graze around town.