Poverty tourism has critics, but rapper Octopizzo says it's got positives

Up close: Kibera, a sprawling slum in the heart of the Kenyan capital, Nairobi.

One of the thriving sectors of the tourism industry in Kenya is also one that no government would want to put on brochures inviting visitors to the country. For a small fee, companies operated by entrepreneurs like young rapper Henry Ohanga (Octopizzo to his fans) offer guided walks through Kibera, a sprawling slum in the heart of the capital.

Tourists get to see up close the mountains of garbage and dense rows of low-slung wattle-and-mud houses that have made that township one of the most notorious urban settlements on the continent.