A drawing is seen on a wall at Pousada Favelinha (Little favela) hostel in Pereira da Silva favela, in Rio de Janeiro, Brazil, April 29, 2016. Hostels in a few of RioÕs more than 1,000 slums serve not only as a cheap housing alternative for the more adventurous among the estimated 500,000 foreign tourists expected to arrive for the Olympics in August. The establishments also open up the rich culture of the city's shantytowns for travellers, giving them a glimpse into once "no-go" areas where about one-fifth of Rio's population lives. REUTERS/Pilar Olivares SEARCH "HOLIDAY FAVELAS" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES