Istanbul (Turkey)
The twenty closest neighbours in the database:
Dubrovnik (Croatia) (917 km), Dnipropetrovsk (Ukraine) (953 km), Mostar (Bosnia and Herzegovina) (954 km), Split (Croatia) (1,065 km), Budapest (Hungary) (1,067 km), Krka National Park (1,109 km), Sibenik (Croatia) (1,114 km), Zadar (Croatia) (1,175 km), Bratislava (Slovak Republic) (1,225 km), Taormina (Italy) (1,225 km), Cairo (Egypt) (1,236 km), Catania (Italy) (1,255 km), Syracuse (Italy) (1,258 km), Vienna (Austria) (1,275 km), Melk Abbey (1,341 km), Rome (Italy) (1,375 km), Malta (1,378 km), Venice (Italy) (1,431 km), Prague (Czech Republic) (1,512 km), Verona (Italy) (1,532 km)