People walking at the street of newly developed Chandni Chowk in old Delhi, view of historical building Lal Quila Red Fort in background, India

people walking street air pollution chandni chowk grey sky red fort india road signs traffic police grey smog indian pedestrian tourist new delhi destination road ancient architecture asia old delhi culture landmark tourism travel busy crowd crowded ornate traffic capital history square famous fort heritage sandstone unesco attraction building traditional lal quila red fort complex poeple delhi new monument hazardous clean