Laranjal do Jari, Brazil

With a population of just 21,372, Laranjal do Jari is a remote river slum struggling with endemic poverty and infrastructure woes. The largest municipality in Brazil's Amapá state, it was once the site of a failed industrial project that left behind a sprawling shantytown. Today, the city still suffers from fires, floods, and open sewage - a persistent headache for residents. Those seeking an easy life in the Amazon should look elsewhere, as Laranjal do Jari offers little more than hardship.