Breakfast onboard followed by an optional guided tour of Schoenbrun Castle, former summer residence of the Imperial family. With its 40 rooms of imperial apartments this residence bears witness to the splendour of life at the time of Marie Therese. Return on board for lunch. In the afternoon we enjoy an optional visit to Vienna. The Imperial City for more than 6 centuries, Vienna is regarded as the hallmark of the Habsburgs. This city particularly owes its charm to its monuments, with memories of the Hapsburg era, its many museums and it famous Operas. The Christmas markets simply add to its charm. Discover the fabulous Christmas market in front of the town hall, marvellously decorated for this festive season. Return on board for dinner and evening entertainment.