Graz Tourism, Austria. Travel Guide. UNESCO experts were so impressed by the interplay of the countless sights and attractions that they declared the Old Town of Graz to be a World Cultural Heritage site, worthy of protection for the ages. Graz is old, to be sure. Fortifications on the city mountain date back to the 11th century. The inner city is full of narrow, romantic streets in which Italian-style palazzi and impressive public halls vie for the...