 Fossils of Neanderthals dating to the middle Palaeolithic period have been unearthed in northern Croatia, with the most famous and the best presented site in Krapina.Remnants of several Neolithic and Chalcolithic cultures were found in all regions of the country.The largest proportion of the sites is in the northern Croatia river valleys, and the most significant cultures whose presence was discovered include Starčevo, Vučedol and Baden cultures.