Islamabad-Rawalpindi metropolitan area the larger metropolitan area. It uses dedicated bus lanes for all of its route covering 24 bus stations. As Pakistan's capital city, Islamabad serves as the seat of the federal government and is the country's political center. Rawalpindi has remained important historically, as it hosts the headquarters of Pakistan's army. Rawalpindi also temporarily served as the federal capital when Islamabad was being built in the 1960s, to replace Karachi as the capital. Islamabad-Rawalpindi metropolitan area The Islamabad-Rawalpindi metropolitan area is Pakistan's third most populous metropolitan area. It consists principally of the twin cities of Islamabad and Rawalpindi, along with smaller
Pakistan Academy of Sciences At first, the Academy was sited in Lahore and considerations were made to establish the headquarters of the Academy in Karachi—a temporary federal capital at that time. An additional office was established in Dhaka to support scientific activities in East Pakistan. In 1965, the headquarters of the academy was permanently shifted to Islamabad the federal capital and was located near the Quaid-e-Azam University until 1976. In 1976, the headquarters was shifted to a rented building in Islamabad, with financial assistance from the Pakistan Science Foundation (PSF). The rented building contained the library of the Academy, a committee room, office rooms