Barges, for those who don't know, are flat-bottomed, slow-travel vessels that come in all shapes and sizes, typically hosting between six to 12 passengers. And barge cruising just got a lot cooler, as the newest barges on Europe's canals mimic cozy boutique hotel suites, featuring comfy contemporary design, bright sunlit rooms and even hot tubs. In this gallery, we take you on a slow journey to some of Europe's finest cruise destinations.