|Subject||Squatting, informal settlements|
US-based journalist Robert Neuwirth spent two years visiting in informal settlements across the globe, including Kibera (a slum in Nairobi, Kenya), Rocinha (a favela in Rio de Janeiro, Brazil), a gecekondu bölgesi zone in Sultanbeyli, Istanbul, Turkey and Dharavi and Sanjay Gandhi Nagar (two squatted areas in Mumbai, India). In the book Neuwirth draws on his experiences to argue that much can be learnt from the self-organization and adaptability of squatters worldwide. He also gives a partial history of slums in such places as London, New York and Paris, suggesting that informal settlements are an integral part of urbanization and concluding on an optimistic note that there are so many squatters that their needs cannot be ignored.
Reviewers welcomed the book as a general overview whilst pointing out defects for the specialist reader. Writing in Forum Qualitative Social Research, Brian Christens said the book was "rich with insights" whilst also criticising Neuwirth's methodology. David Satterthwaite reviewed the book twice. In Environment & Urbanization he takes exception to Neuwirth's dismissal of the National Slum Dwellers Federation in Mumbai as "'feel-good' organizing", arguing that the federation, allied with groups such as SPARC and Mahila Milan, provides a concrete means for slum dwellers to better their conditions. In International Journal of Urban and Regional Research, he criticises Neuwirth for writing about specific places whilst ignoring the extensive research already carried out on them; he also praises how the book "captures the vibrancy evident in many squatter settlements". In Harvard Design Magazine, John Beardsley commented what the "book lacks in trenchant social analysis or substantive policy understanding it more than makes up for in a close reading of what life is like in four settlements around the world".
- Montgomery, Mark R. (2005). "Review of Shadow Cities: A Billion Squatters, a New Urban World". Population and Development Review. 31 (2): 373–376. ISSN 0098-7921. Retrieved 29 January 2021.
- Christens, Brian (31 May 2005). "Review: Robert Neuwirth (2005). Shadow Cities: A Billion Squatters, a New Urban World". Forum Qualitative Sozialforschung / Forum: Qualitative Social Research. 6 (2). doi:10.17169/fqs-6.2.477. ISSN 1438-5627. Retrieved 30 January 2021.
- Herman, Marc (2005). "Shadow Cities: A Billion Squatters, a New Urban World". Mother Jones. Retrieved 30 January 2021.
- Satterthwaite, David (October 2006). "Book Review: Planet of Slums by Mike Davis and Shadow Cities by Robert Neuwirthd". Environment and Urbanization. 18 (2): 543–546. doi:10.1177/0956247806069633. ISSN 0956-2478. Retrieved 30 January 2021.
- Satterthwaite, David (March 2008). "Shadow Cities; a Billion Squatters, a New Urban World - By Robert Neuwirth: Book reviews". International Journal of Urban and Regional Research. 32 (1): 233–235. doi:10.1111/j.1468-2427.2008.00775_6.x.
- Beardsley, John (2007). "A Billion Slum Dwellers and Counting". Harvard Design Magazine. 27.