The Rhine is said to be the source of two Swiss lakes, Lake Geneva and Lake Lunsen. It is the most important waterway and canal in Germany, and is also the heartland of the Holy Roman Empire, and the medieval castles still stand on the Rhine. But now they have lost their power and become a romantic landscape in the Rhine Valley, where grapes are grown on the mountains on both sides of the canal to make white wine, the most valuable cash crop in the mountains. There are many castles on both sides of the river, the mountain is called high castle, the mountain is called low castle, in addition to not so magnificent, but also become a place for rich people to relax and vacation. Regarding the castle, this is what every girl yearns for. In fairy tales, there is always a happy home for princes and princesses... I always like the castle, especially the beauty of it... There are many RVs on the Rhine River. The holidaymakers are leisurely fishing and playing by the river. They are leisurely listening to the sound of running water and smelling the grass, looking up at the castle and taste the food. . . . I envy such leisure and yearn for such "free wandering". . . .