Lake Akan
Lake Akan is Hokkaido's fifth largest freshwater lake and is known as a habitat for marimo moss balls. Marimo moss balls can be found in freshwater lakes all over the world, but the ones in Lake Akan have international significance due to their beautiful spherical shape with a diameter of more than 15 cm.
In winter, you can go smelt fishing right on the lake, and there are shops nearby that will fry your catch for you. You can also ride a banana boat on the ice—super fun! The scenery around the lake is gorgeous in summer, too!