Walter Gomes da Silva’s relationship with Brazil's numerous indigenous tribes goes back to 1984, when members of the União da Nações Indígenas (Union of Indigenous Nations) asked him to market their handiwork. So he certainly knows what he's talking about. Today, the arts and crafts gallery he runs with Silvana Costa sells work from 60 indigenous settlements, from geometrically patterned ceramics to arrowheads. Informative videos and books are available on site for those keen to learn more about Brazil's first residents.