Hunedoara's single unmissable sight is Corvin Castle, and it earns the trip on its own. The castle is one of the grandest Gothic fortresses in Central Europe, and walking through its great hall, towers, and stone-flagged courtyards feels genuinely dramatic rather than merely photogenic. Beyond the castle, the old town retains a handful of Orthodox churches and a modest historic core that rewards a short walk before or after the main event.