Golubac Fortress
Perched dramatically on sheer limestone cliffs at the entrance to the Iron Gates gorge along the Danube River, Golubac Fortress is one of Serbia's most spectacular medieval strongholds. Built in the early 14th century and fought over in more than 120 battles between the Serbian Despotate, the Kingdom of Hungary, and the Ottoman Empire, the fortress features nine imposing stone towers linked by fortified ramparts. Centuries of violent sieges, river blockades, and local legends—including the tragic story of a captive princess imprisoned in the highest tower—have endowed Golubac with persistent reports of phantom sightings, spectral lights, and disembodied voices echoing along the Danube.