The generic term "slum" is seldom used in Cuba, substandard housing is described: housing type, housing conditions, building materials, and settlement type. The National Housing Institute considers units in ''solares'' (a large inner-city mansion or older hotel or boarding house subdivided into rooms, sometimes with over 60 families) and shanty towns to be the "precarious housing stock" and tracks their number. Most slum units are concentrated in the inner-city municipalities of Old Havana and Centro Habana, as well as such neighborhoods as ''Atarés'' in Regla. People living in slums have access to the same education, health care, job opportunities and social security as those who live in formerly privileged neighborhoods. Shanty towns are scattered throughout the city except for in a few central areas.