Rio‘s slums are neither out of sight nor out of mind. The poorest shanty neighborhoods — the favelas — cling precariously to the hillsides, providing the backdrop to many of the more affluent areas. For most tourists (and Cariocas), the favelas are synonymous with crime and are regarded as areas to avoid. And yet a visit to a favela can be immensely rewarding, with benefits to both tourists and the inhabitants. Venturing into a favela on your own is not recommended. Instead, sign up for a guided tour on which a streetwise local will escort you. Your fee will contribute to the local economy, and in return you’ll get to experience maze-like neighborhoods full of vitality. Favela Architectour, a company set up by two favela residents, runs the best tours.