Tony Phelps / Bongolethu, an unnofficial settlement. Little Karoo, Western Cape, South Africa, August 2011

Tim Laman / Aerial view of rooftops of basic housing and railway, San Jose, Cartago, Costa Rica.

Fabio Liverani / Vegetable refuse from market stalls in the Bidonville slums of Lagos, Nigeria West Africa. 2002

Fabio Liverani / Beggars on railway bridge in the Bidonville slums of Lagos, Nigeria, West Africa 2002

Fabio Liverani / Street scene in the Bidonville slums of Lagos, Nigeria, West Africa 2002