Ilok is the easternmost town in Croatia forming a geographic salient surrounded by Vojvodina. Located in the Syrmia region, it lies on the Fruška Gora hill overlooking the Danube river, which forms the border with the Bačka region of Serbia. The town is home to a Franciscan monastery and Ilok Castle, which is a popular day trip for domestic and cross-border tourists.

Ladislaus of Ilok was a Croato–Hungarian nobleman, a member of the Iločki noble family. He held the dignity of Ban of Macsó (Mačva), as well as župan of Baranya, Bodrog, Srijem, Vukovar and Tolna in the associated kingdoms Hungary and Croatia.