Four countries in a day? Yes it’s possible! If keen on counting off countries, you could wake up in Switzerland, visit the castle in Liechtenstein, hop on a ferry to a German island and be in Austria in time for tea, complete with apple strudel and Alpine views, of course. That’s the beauty of Lake Constance. The dreamy lakeside vistas are free and the peacefulness is priceless! In Summer the lake is perfect for swimming in clean, warm water or for sailing and boating on a windier day.