Step into history at the Castello Svevo, a massive stone fortress that has guarded the edge of Bari's old town for centuries. You can feel the layers of time here, from its Norman foundations to the grand additions by Emperor Frederick II. Inside, wander through impressive courtyards and explore fascinating exhibits, including a collection of plaster casts from the region's most important monuments. While you can't currently walk the main ramparts for a panoramic view, the castle's sheer scale and the stories within its walls offer a powerful glimpse into Bari's medieval past. The full adult admission is €10.