Prehistory

Copper Age finds are from Vučedol culture (named after Vučedol near Vukovar). In Vučedol, people lived on hilltops with palisade walls. Houses were half buried, mostly square or circular (they were also combined in mushroom shape), with floors of burned clay and circular fireplaces.

The Bronze culture of the Illyrians, an ethnic group with distinct culture and art, started to organize itself in what is now Croatia. Numerous monumental sculptures are preserved, as well as the walls of the citadel Nezakcij near Pula, one of the numerous Istrian cities from the Iron Age.

Source: Wikipedia