View a Star-Shaped Castle Ruins, One of Only Two in Japan
About this spot
One of only two star-shaped Western-style castles built during Japan's final years of the shogunate. Known as a precious structure alongside Hakodate's Five-Pointed Fort, the unique pentagonal shape surrounded by moats can be clearly viewed from a nearby observation platform. The grounds include an elementary school and museum where families can learn about Saku's history while visiting. The unusual castle shape is sure to capture children's interest.
Fireworks details
Name: 佐久千曲川大花火大会
Date & time: 8/15 (Sat) 19:30–21:00
Venue: 千曲川河川敷(佐久橋・野沢橋間)
Shells: approx. 4,000
2026年8月15日(土)開催、信州佐久の夏を代表する花火大会です。千曲川河川敷(佐久橋・野沢橋間)から約4,000発の花火が打ち上がり、広い川幅を活かした大迫力のスターマインが夜空いっぱいに広がります。周囲を山に囲まれた盆地ならではの音の響きも見どころのひとつ。1日たっぷり佐久の歴史と自然を巡った締めくくりにふさわしい、迫力満点のフィナーレです。
Tips
荒天時は中止や順延の可能性があるため、当日の開催可否は佐久市の公式発表で確認を。終了後は周辺道路と佐久平駅が大変混雑するため、時間差での移動がおすすめです。夜は冷えることがあるので羽織ものを忘れずに。
Tips
About 15 minutes by car from Pinkororo Jizo. To see the entire star shape, a short walk to a nearby observation platform is needed. It's about 20 minutes by car to the next destination, Sakuhira Station plaza.
Best time to visit
Takes approximately 1 hour 30 minutes. The afternoon light beautifully reflects off the moat's water surface.
Access & map
〒384-0412 Nagano Prefecture, Saku City, Taguchi Shita-machi 3000−1
Model course featuring this spot
2026 Saku Chikuma River Grand Fireworks Festival Full-Day Course
Nagano
Explore features & model courses
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