istanbul

or actually..........
The modern Turkish name İstanbul (IPA: [isˈtanbul] or colloquial [ɨsˈtanbul]) has been used to describe this city, in a range of different variants, from as far back as the 10th century; it has been the common name for the city in normal Turkish speech since before the conquest of 1453. Etymologically, it derives from the Greek phrase "εἰς τὴν Πόλιν" [istimˈbolin] or in the Aegean dialect "εἰς τὰν Πόλιν" [istamˈbolin] (modern Greek "στην Πόλι" [stimˈboli]), which means "in the city", "to the city" or "downtown".[4]

(thanks, wiki :-)