Fatih, historically Constantinople, is the capital district and a municipality (belediye) in Istanbul, Turkey which hosts the provincial authorities, including the governor's office, police headquarters, metropolitan municipality and tax office while encompassing the peninsula coinciding with old Constantinople. In 2009, the district of Eminönü, which had been a separate municipality located at the tip of the peninsula, was remerged into Fatih because of the small population of Eminönü. Fatih borders the Golden Horn to the north and the Sea of Marmara to the south, while the Western border is demarked by the Theodosian wall and the east by the Bosphorus Strait.