“Five minutes to get another fruit juice,” I tell my Canadian cruise mates on the sundeck of CroisiEurope’s MS Lafayette and race downstairs to the bar and back. Just in time for the next castle to loom on top of the hill. We are in the middle of one of Europe’s most popular river cruising routes, watching amazing landscapes and at least forty castles and fortresses from the Middle Ages go by from our chaises. Can you ever take enough pictures of castles? No, of course not.