Above Old Town Graz rises the Schlossberg, a 473-meter-tall hill that can be ascended by funicular railway (it takes just three minutes to get to the top) or, alternatively, via a pleasant 20-minute walk. 

Highlights include the superb 28-meter-tall Clock Tower (Uhrturm), the city's best-known landmark. Built in 1561, it's all that's left of the massive fortifications that once stood here and which were dismantled after the Treaty of Vienna in 1809.