Istanbul historically known as Byzantium and Constantinople, is the largest city in Turkey and the country's economic, cultural and historic center. The city straddles the Bosphorus strait, and lies in both Europe and Asia.
Kastamonu is the capital district of the Kastamonu Province, Turkey. According to the 2000 census, population of the district is 102,059 of which 64,606 live in the urban center of Kastamonu.