Ciudades de muros. Los fraccionamientos cerrados en la frontera noroeste de México

Nowadays the characteristic and prevailing process of urbanization in border cities located in the northwest of Mexico (like Tijuana, Nogales and Ciudad Juárez), is the enclosed neighborhood. It refers to the physical space protected by walls and fences from city disturbance, access control, and private vigilance. This kind of neighborhoods tends to spread throughout border cities without restrictions, but the ones established by the real-estate market.