This site is accessed via Simuna-Kožicica-Benje Street, formerly one of the main thoroughfares of the Roman city. The forum, begun in the 1C BC and finished in the 3C AD is 95m long and 45m wide (the largest in Croatia). It is partially obscured by later constructions, but its paving stones and other ruins are still visible. It is lined today by the church of St Donat, the cathedral and the archbishops' palace (the ochre building).