Road trip from Basel through Upper Rhein Valley
Hi, my SO and I are planning to rent a car from the Basel area and drive along the Rhein Valley, the weekend of September 19. We'd be grateful for any suggestions for routes/highlights. We're planning on being away one night, but would extend to two nights if there's enough to see and do. We like to hike and drink wine (sometimes contemporaneously), and I'm a bit of a WW2 buff. Our budget is mid-range. Also, any tricks on saving car rental costs in the Basel area (like the French side of the Geneva airport)?