Lahore is the capital and largest city of the Pakistani province of Punjab. It is the second largest city in Pakistan, after Karachi, and 26th largest in the world, with a population of over 13 million. It is located in the north-eastern region of Punjab, along the River Ravi. Lahore is one of Pakistan's major industrial and economic hubs. It has been the historic capital and cultural centre of the wider Punjab region, and is one of Pakistan's most socially liberal, progressive, and cosmopolitan cities.