I recommend visiting - Akan-ko National Park, Japan
Lake Akan freezes over completely in the winter, and activities like ice-hole fishing are an enjoyable part of the winter festivals. In summer, you can explore the gorgeous national park. Another fascinating aspect of Lake Akan is the indigenous Ainu culture of the region. The Ainu street in Ainu Kotan village offers an insight into their culture and lifestyle, with traditional performances and plenty of shops where you can buy crafts. I would also recommend a rooftop hot spring experience. Looking out over the frozen lake and Mount Oakan from the comfort of the onsen waters is magical.