The Layari River flows through Karachi and forms an excellent harbor where it empties into the Arabian Sea. The center of Karachi, which is next to the harbor, is the most heavily populated section. It includes the main bazaar, or market, called the Sadr, and most of Karachi's important buildings. Attractions in or near this area include the Mausoleum of Mohammed Ali Jinnah, the National Museum, and the Zoological Gardens. Residential areas are scattered around the city, and the chief industrial districts are in the suburbs.
Suburban towns provide housing for the rapidly growing population.
Karachi is an important educational center and has several universities and many other schools. Several departments of Pakistan's government are in the city. The area also includes many popular beach resorts. Factories manufacture textiles, printed materials, steel, food products, chemicals, transportation equipment, and other products. The city has a shipyard, and its port serves as the gateway for Pakistan's foreign trade.