a town in Baden, on the right bank of the Rhine, where that river is crossed by a bridge of boats, situated in N. Lat. 48. 36., E. Long. 7. 52., and directly opposite Strasbourg. It was at one time a bulwark of Germany, and, having been taken by the French, was fortified by Vauban. It has been frequently taken and retaken since, but now the fortifications are dismantled. The inhabitants are employed mostly in the transit trade. Pop. 1500.