Pembrokeshire (pop. 112,901) is a local government area in southwest Wales. It is a unitary authority, the primary form of local government in the United Kingdom. The area includes the Pembrokeshire Coast National Park. Tourism is an important industry. The other main industries are agriculture and oil refining. Pembrokeshire's leading towns are Pembroke, Milford Haven, Haverfordwest, and Fishguard. Pembroke is a historic town and port. Milford Haven is a major center of oil refining.