Islamabad (/ɪzˈlɑːməˌbɑːd/; Urdu: اسلام آباد, Islāmābād, Urdu pronunciation:[ɪsˌlɑːmɑˈbɑːd̪]) is the capital city of Pakistan located within the Islamabad Capital Territory. It has a population of 2million and together with its neighbouring twin city of Rawalpindi, the greater Islamabad-Rawalpindi metropolitan area is the third largest in Pakistan with a population of over 4.5million inhabitants.