List of capitals in Pakistan
Islamabad officially became the capital of Pakistan on 14 August 1967, exactly 20 years after the country's independence. Previously, Rawalpindi was the capital, designated in 1958. The first capital of Pakistan was the coastal city of Karachi, which was selected by Muhammad Ali Jinnah. Karachi was and still is the largest city and economic capital of Pakistan. It remained the seat of government until 1959, when the military president, Ayub Khan, decided to build a new capital in the north of Pakistan, near the general headquarters of the Pakistani Armed Forces at Rawalpindi.
Federal B. Area
When Pakistan came into being the port city of Karachi was chosen as the capital of the federation. An area within Karachi was selected to serve as the home of federal government offices and employees and house other important buildings. This area was named as Federal Capital Area or F.C. Area. The residential area around F.C. Area came to be known by the people as Federal B Area or F.B. Area. Block 14 has a notable Ansari House near Falah Mosque and Talimi Bagh which is famous in Dastagir.