Kaštelir above Korte near Izola is one of the best known prehistoric settlements in the Slovenian part of Istria. The site was first mentioned by Pietro Coppo in the 16th Century, at the beginning of 20th Century Carlo Marchesetti described the site as Il castelliere d‘Albuzzano presso Corte d‘Isola, however the first proper archaeological excavation took place in the 60’s and 70’s of 20th Century. With it the site was confirmed as a prehistoric hillfort of exceptional importance. Between 2008 and 2014 Kaštelir has been a main focus of the project “Kaštelir above Korte - Cultural and recreational park”, financially supported by the Municipality of Izola and conducted by research team from University of Primorska. In article we are presenting results of the archaeological test probing, done in 2014, which demonstrates that Kaštelir above Korte must be considered not only as a prehistoric settlement but also a place of a very early Roman settlement.