Wuerzburg: prince-bishops and the UNESCO Residenz
Wuerzburg was the seat of prince-bishops, and their Residenz is one of Europe's great Baroque palaces, a UNESCO World Heritage Site since 1981. Over its ceremonial staircase spreads the largest continuous ceiling fresco in the world, painted by Giovanni Battista Tiepolo, with the four continents ranged around the vault. It is the strongest reason to give the northern end proper time; check the official source for current opening and ticketing before planning your visit.