Chillon Castle is a must-see after arriving in Montreux. Built on the rocks on the shores of Lake Geneva, the castle looks like it floats on the water. Looking at its majestic appearance, it is known as the most prestigious monument in Switzerland. Walking into the Chillon Castle, which has experienced ten centuries of baptism, the oncoming sense of history gives people a sense of awe. Whether it is the former royal territory or the later summer palace, the Chillon Castle is very important in history. Status. In the history of the Chillon Castle, we are most familiar with Byron and his book The Prisoner of Xiyong. Now, we walk into the castle again, and the prosperity of the past is still clearly displayed in front of the world. Mounting the roof, overlooking the fascinating landscape of Lake Geneva, and overlooking the French border is another attraction of the Chillon Castle.