For our final day of free Swiss rail travel, we decided to stay close to home. We headed northeast, to a curious finger of Switzerland on the north side of the Rhine River – which otherwise forms the border with Germany. The train stops directly at the Rheinfall, the most powerful waterfall in Europe, where there are some impressive viewing platforms and an historic castle now converted into a restaurant. The waterfall was beautiful, though the flow was at an annual low – it being winter, and there being no rain for the past week. The low-angle sun (1:30pm, a few weeks after winter solstice) painted a pretty rainbow on the mist of the falls (a “mistbow”?). Read on, and check out the Rheinfall gallery and Schaffhausen gallery.