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The Lake Constance (Bodensee) at the border to Switzerland and Austria is Germany's largest lake, source of drinking water for millions and a haven for hikers, cyclists and sailors. Around its banks, you can discover Stone Age settlements, the "Flower Island" Mainau and the medieval peninsula of Lindau where the living Nobel Laureates of the world meet once a year.
Once abandoned and now restored by enthusiasts, this metre-gauge railway operates steam trains and diesel motor cars through rustic areas. It operates on the first Sunday of each month from May to October, plus on other scheduled event days.