Corfu city or Kerkyra (Greek: Κέρκυρα) is a city and a former municipality on the island of Corfu, Ionian Islands, Greece. Since the 2011 local government reform, it is part of the municipality of Corfu island. It is the capital of the island and of the Corfu regional unit. The city also serves as a capital for the region of the Ionian Islands. The city (population 24,838 in 2011) is a major tourist attraction, and has played an important role since the 8th century. The city has become known since the Middle Ages as Kastropolis (Castle City) because of its two castles. In 2007, the old town of the city was inscribed on the UNESCO World Heritage List. The municipal unit of Corfu city has a land area of 41.905 km2 (16.180 sq mi) and a total population of 39,674 inhabitants. Besides the city of Corfu/Kérkyra, its largest other towns are Kanáli (population 4,086), Potamós (3,840), Kontokáli (1,660), Alepoú (3,149), and Gouviá (838).