Rawalpindi, commonly known as Pindi, is a rapidly growing city in the Pothohar region of northern Punjab, Pakistan. It is located only 14 kilometres south from the capital city of Islamabad, in the province of Punjab. Rawalpindi is the fourth most populous urban area and is in the List of most populous metropolitan areas in Pakistan. The Rawalpindi/Islamabad metropolitan area is the ranked the third highest in the country. Due to the high interdependence and intertwined areas of the two cities, they are known as the twin cities of Rawalpindi/Islamabad. In the 1950's, Rawalpindi was smaller than Hyderabad and Multan, but the city's economy received a boost during the building of Islamabad, during which Rawalpindi served as the national capital. Therefore, it served as the capital of Pakistan, as Islamabad was being built. Rawalpindi is in the northernmost part of the Punjab province, located 275 km to the north-west of Lahore. It is the administrative seat of the Rawalpindi District. Also, Rawalpindi is the military headquarters GHQ of the Pakistani Armed Forces.Many tourists use the city as a stop before traveling towards the northern areas. Numerous shopping bazaars, parks and a cosmopolitan population attract shoppers from all over Pakistan and abroad. The city is home to several industries and factories. Murre road is one of the busiest road in rawalpindi. Tourists are attracted towards saddar, cinepax , Islamabad International Airport is located in Rawalpindi, which is also the Chaklala Airbase, and serves both cities and several neighboring districts for international flights.