2026 Otome Lake (Kotogawa Dam) Lakeside Plaza Full-Day Starry Sky Course

At the lakeside plaza of Otome Lake (Kotogawa Dam) in Makioka, Yamanashi City, the Yamanashi City Lifelong Learning Division hosts Family Stargazing at Otome Lake (家族で楽しむ星空観測＠乙女湖) about once a year (capacity 70, free, round-trip bus available, advance application required). This is not a permanent observation facility and the event date varies by year, so check the latest schedule on the official Yamanashi City website (city.yamanashi.yamanashi.jp) and apply in advance before visiting.