The industrial city of Jubail (Al Jubayl), situated on the eastern coast of the Arabian Gulf and Yanbu, is home to the Chamber Tower business centre. The business centre occupies the Chamber of Commerce building - a strategic location for any business in industry, trade or services. Jubail was once a centre for the gem trade but is better known today as a massive industrial hub with a distinct international outlook. The Eastern province is the largest in the Kingdom of Saudi Arabia and is rich in natural oil and gas resources. However, the area has long been diversifying beyond the key petrochemical industries to embrace non-oil manufacturing such as electricity, agriculture, water desalination, and mining. Jubail is in a unique position as a gateway for tourism and trade with neighbouring countries and has links both east and west. Its modern road infrastructure, ports and airports also make it attractive to business.