Abu Dhabi is the capital city of the United Arab Emirates. The city is the seat of the Abu Dhabi Central Capital District, the capital city of the Emirate of Abu Dhabi, and the UAE's second-most populous city, after Dubai. The city is situated on a T-shaped island, extending into the Gulf from the central-western coast of the UAE. Abu Dhabi is located on an island in the Persian Gulf, off the Central West Coast.