Darwin is a coastal city, situated along the western shoreline of the Northern Territory. The water meets the land from the Beagle Gulf, which extends out into the Timor Sea. The central business district occupies a low bluff overlooking Darwin Harbour to the south, beyond which lie East Arm, Middle Arm, Northern Territory, and, across the gulf, West Arm. Middle Arm has an industrial precinct on the peninsula, which is being promoted as a sustainable development area that will include plants for industries such as low-emission petrochemicals, renewable hydrogen, and carbon capture storage. The city is flanked by Frances Bay to the east and Cullen Bay to the west.