Slavonia is one of Croatia's winemaking sub-regions, a part of its continental winegrowing region. The best known winegrowing areas of Slavonia are centered on Đakovo, Ilok and Kutjevo, where Graševina grapes are predominant, but other cultivars are increasingly present. In past decades, an increasing quantity of wine production in Slavonia was accompanied by increasing quality and growing recognition at home and abroad. Grape vines were first grown in the region of Ilok, as early as the 3rd century AD. The oldest Slavonian wine cellar still in continuous use for winemaking is located in Kutjevo—built in 1232 by Cistercians.