Many believe Dharavi, India's largest slum in the heart of Mumbai, is also Asia's largest. Wrong, says a United Nations Development Programme (UNDP) report. Karachi's Orangi township is Asia's largest slum. "Dharavi is not Asia's largest slum. Karachi's Orangi Township has surpassed Dharavi," the Human Development Report for Mumbai, compiled with the help of UNDP and released by the Brihanmumbai Municipal Corporation (BMC), said. The proposed Rs 9,260-crore Dharavi Redevelopment Project (DRP), drawn up by architect Mukesh Mehta and part of Maharashtra government's plan to transform Mumbai into an International Finance Centre, is yet to be implemented despite being approved in 2004. The DRP envisaged a residential area with schools, hospitals and other amenities, four commercial zones including a Gems and Jewellery district and a leather district for Dharavi. The slum's families were to be accommodated in 225 sq feet multi-storied tenements. Orangi, not Dharavi, is AsiaÂ’s largest slum, claims UNDP - Indian Express Orangi Town is the Largest Slum in Asia and the Islamic World. Congrats to the Islamic Republic of Pakistan.