Tomé-Açu, Brazil

With a population of just 41,403, Tomé-Açu is a remote municipality in the Amazon region of Brazil. The town's history traces back to indigenous Tembé tribes and Portuguese settlers, but it's perhaps best known as the site of a concentration camp for Japanese immigrants during World War II. Today, the persistent bureaucracy and isolation are a headache for many would-be residents. Only those with a millennial tradition in agriculture and a certain volume of capital will find Tomé-Açu a suitable home.