Karachi is different from the rest of Pakistan in pretty much the same way that New York is different from the United States. The pace of life is more hurried; time is money and money is important. The idea that in this city one can always make a living one way or another is pervasive. The infrastructure of Karachi has developed drastically during last 4 years. The city Nazim (Syed Mustafa Kamal) has done a lot of hard work in developing bridges, underpasses, highways and green belts. The city is being set to path on modern basis. http://wikitravel.org/en/Karachi