Thurgau is the apple canton — rolling countryside between the Bodensee (Lake Constance) and the hills of eastern Switzerland, covered in orchards that bloom white in spring and turn the roadside farm stalls into cider-tasting stops in autumn. It is one of the least-visited parts of Switzerland, which keeps it affordable and unhurried.
The lakeside is the main draw. Kreuzlingen merges almost seamlessly with Konstanz across the German border, and the lake promenades on both sides are excellent for cycling. The medieval towns of Arbon and Romanshorn have harbours with ferry connections across to the German shore. Inland, Frauenfeld is the cantonal capital — small and quiet, with a castle and a pleasant old town.
Thurgau is best as a cycling destination. The flat terrain along the lake and the gentle hills behind it make for easy riding, and the route from Kreuzlingen to Stein am Rhein along the Untersee is one of the finest lake cycling paths in Switzerland.