Nothing's better than chilling out by the water while you're on vacation. Enjoy an afternoon picnic at Lake Tazawa and then stay for a lovely sunset.
When you've finished exploring this body of water in Senboku, why not make your way to Tazawako Ski Resort, Gozanoishi Shrine, and Akita Komagatake? They're not too far from Lake Tazawa and also popular with tourists.