Cellars of Diocletian's Palace

The Cellars of Diocletian's Palace are substructures at the southern end of the 3rd-century AD palace in Split, Croatia, representing some of the best-preserved Roman substructures of their kind in the world. Built to elevate the emperor's private apartments, they also served as storage for foodstuffs and wine, with a remnant of a large wine press still visible. In the Early Middle Ages, refugees adapted parts as residential areas. In 2024, archaeologists discovered a hidden passageway beneath Hrvojeva Street sealed for over 500 years, connecting to the cellars. The palace complex is a UNESCO World Heritage Site.