The Toyako tour boat travels around the island consists of four islands. On the lake, you can hear the sound of the waves surrounded by Mount Yōtei, Showa Shinzan and nature, and enjoy the beauty of the four seasons. In the lake, there is a large catamaran "Espoir". The medieval shape is like a dream castle floating on the lake. During the Summer Fireworks Festival, the fireworks viewing boats sail every night.