Le Vieil Armand (Hartmannswillerkopf) WWI memorial

WWI mountain battlefield and national monument on the Route des Crêtes above Cernay. A long, steady road climb from Wattwiller — moving, panoramic, and quiet on weekdays.
From the route
Leaves the route between Guebwiller and Cernay on day 5; 11.2 km one-way with 640 m of climbing on paved road.