Dominique Lapierre's 'City Of Joy' is based on Kolkata (formerly Calcutta). The novel, published in 1985, depicts the life of people living in the slums of Kolkata and explores themes of poverty, hope, and human resilience. Mumbai was the setting for 'Maximum City', Hyderabad is known for its IT industry, and Chennai is the capital of Tamil Nadu - none of which were the inspiration for this particular work.