Istanbul Fatih district, which was named after Sultan Mehmed the Conqueror (Turkish: "Fatih Sultan Mehmed"), corresponds to what was, until the Ottoman conquest in 1453, the whole of the city of Constantinople (today is the capital district and called the "historic peninsula" of Istanbul) on the southern shore of the Golden Horn, across the medieval Genoese citadel of Galata on the northern shore. The Genoese fortifications in Galata were largely demolished in the 19th century, leaving only the Galata Tower, to make way for the northward expansion of the city. Galata (Karaköy) is today a quarter within the Beyoğlu (Pera) district,
Galata Mehmed II with the name "Galata Camii" (Galata Mosque; or alternatively "Cami-i Kebir", i.e. Great Mosque), it was given by Sultan Bayezid II to the Spanish Moors who fled the Spanish Inquisition of 1492 and came to Istanbul. In 1261, the quarter was retaken by the Byzantines, but Emperor Michael VIII Palaiologos (r. 1259–1282) granted it to the Genoese in 1267 in accordance with the Treaty of Nymphaeum. The precise limits of the Genoese colony were stipulated in 1303, and they were prohibited from fortifying it. The Genoese however disregarded this, and through subsequent expansions of the walls, enlarged the