Infrastructures are often self-built from wood, cardboard, plastic, waste roofs and bricks. Most of them lack windows, doors, adequate ventilation and are often small living spaces shared with one or two other families. The floors are earth. These places are not habitable for human beings, but slum dwellers have no other alternative. Slums are a resounding failure because they lack the infrastructural conditions that affect their residents physically, socially and emotionally. Some solutions, including demolition and modernization, have been implemented but have often failed because they do not include the existing community. If we resolve the housing conditions, it is no longer a slum. Many of us are unaware of the reasons for these existing colonies. The reason for the growth of slums is the migration from rural to urban areas by people who seek better opportunities in the city compared to agricultural jobs. Slums clearly represent the disproportion between migration to cities and economic growth within the city. However, migration creates a high demand for housing, leading to a shortage of housing, forcing people to move and live in urban areas. The definition of a slum presented by the Slum Challenge: Global Human Settlements Report 2003, a One-Inhabitant report, is: “A rundown area of ​​a city characterized by substandard housing and squalor and lacking security of tenure.” These existing communities are often heavily populated and ignored by the rest of the government and the rest of the world. Slums are highly populated, this density in cities is increasing rapidly and basic amenities do not meet needs. According to Mike Davis, writing in Plane's book...... middle of article ......linčić M, Joksimović M. “The slums of Belgrade – life or survival on the margins of Serbian society ? A journal of the humanities and social sciences. 17:1 (March 2013) 55-86. Premier Academic Research. Internet. February 4, 2014. Szwarcwald C, da Mota J, Damacena G, Pereira T. “Health inequalities in Rio de Janeiro, Brazil: lower healthy life expectancy in socio-economically disadvantaged areas.” American Journal of Public Health.101:3 (March 2011):517-523. Premier Academic Research. Internet. February 4, 2014. Szwarcwald C, da Mota J, Damacena G, Pereira T. “Health inequalities in Rio de Janeiro, Brazil: lower healthy life expectancy in socioeconomically disadvantaged areas.” American Journal of Public Health.101:3 (March 2011):517-523. Premier Academic Research. Internet. February 4, 2014. The Slum Challenge: World Human Settlements Report 2003. London: Earthscan Publications, 2003. Un-habitant.com. Print.