Vinnytsia is a city in west-central Ukraine, located on the banks of the Southern Bug. It is the administrative center of Vinnytsia Oblast and the largest city in the historic region of Podillia. Administratively, it is incorporated as a town of oblast significance. It also serves as an administrative center of Vinnytsia Raion, one of the 27 districts of Vinnytsia Oblast, though it is not a part of the district. Population: A historic city known since Middle Ages and a former Soviet Cold War-airbase, Vinnytsia is now a modern cosmopolitan city.