ABSTRACT
In Doug Saunders' journalistic travels, he developed the habit of introducing himself to new cities by riding subway and tram routes to the end of the line, or into the hidden interstices and inaccessible corners of the urban core, and examining the places that extended before him. Saunders takes note of the positive role that arrival city slums can play in the process of urban upward mobility that is central to the urbanization process and to individual family aspirations of rural migration worldwide. Shenzhen, on the southern mainland of China across the Deep Bay from Hong Kong, is the world's largest purpose-built arrival city. Los Angeles stands out as the premier arrival-city cluster of the United States, with almost half its population born in other countries. Mumbai launched an aggressive drive to demolish shantytowns, which occupy fourteen percent of the city's land area and house sixty percent of its twelve million people.
