Aerial view of the Rumeli Fortress, Istanbul 🇹🇷 The Rumeli Fortress was built in 1452 by the order of Fatih Sultan Mehmed, famous as Mehmed the Conqueror or simply Mehmed II, by the narrowest point of the Bosphorus channel, just opposite Anadolu Hisarı – another Ottoman fortress located on the Anatolian side and constructed about 60 years earlier (1390-1395) as an observation post. It was built in four months in order to prevent military and economic aid to the Byzantine Empire coming from the