Friedrichshafen is a city on the northern shoreline of Lake Constance in Southern Germany, near the borders of both Switzerland and Austria…Friedrichshafen is a city on the northern shoreline of Lake Constance in Southern Germany, near the borders of both Switzerland and Austria. It is the district capital of the Bodensee district in the federal state of Baden-Württemberg. Friedrichshafen has a population of about 63,000.