Wikipedia
Sonagachi
Sonagachi is reputedly India's largest red-light district. Sonagachi is located in Kolkata, India. Its area contains several hundred multi-story brothels and an estimated 11,000 sex workers (2012). Sonagachi is located in North Kolkata near the intersection of Chittaranjan Avenue and Shobhabazar with Beadon Street, about one kilometer north of Kolkata's Marble Palace area.