Old Delhi, with its narrow, winding streets, bustling markets, and historical urban fabric, developed organically over centuries. It was not designed according to any modern urban planning principles but evolved over time based on social and economic needs.
In contrast, New Delhi, Dwaraka sub-city, and Chandigarh were all planned cities, developed with the help of urban planners and architects, with defined layouts, infrastructure, and zoning systems.
Organic development refers to cities that grow and evolve over time without a formal planning structure, and Old Delhi is a prime example of this.