The parts of the cities, where these slums are located, are quite congested, as they are over populated. The conditions of the slum areas in metropolitan cities have deteriorated to such an extent due to the high density of population that the people there hardly enjoy even the basic amenities. The lanes are narrow and the houses are nothing but a single room tenement without the facilities of an open courtyard or an enclosure, thus depriving the people of natural gifts like sunshine and air.