The highlights include Regensburg's amazing gothic cathedral, the original roman city gate, the stone bridge, Germany's oldest sausage restaurant on the banks of the Danube River, and the town hall. But the city's real charm lies in its quaint 14th-century alleyways and cafes where old-world charm combines with a lively university scene. Now most of the Old Town is protected as a UNESCO World Heritage Site which ensures this unique character will be preserved.