Würzburg Residence
The palace in southern Germany, built for the prince-bishops of Würzburg, contains no less than 365 rooms. Its architect, Baltasar Neumann, was lauded for its magnificent staircase, which is decorated by the world’s biggest ceiling fresco, painted by Venetian artist Giovanni Battista Tiepolo in 1752-53. The Würzburg Residence became a UNESCO World Heritage Site in 1981.