This magnificent Baroque palace, surrounded by immaculately manicured gardens, is one of Germany’s most striking and largest palaces. The Prince-Bishops Lothar Franz and Friedrich Carl von Schönborn commissioned it as a new residence, modelled on the Palace of Versailles. Its staircase, the Treppenhaus, is topped off by the world’s largest fresco, painted by Giovanni Battista Tiepolo. Today it’s home to government institutions and a museum, but you can still wander around at least 40 of its grandest rooms.