Panoramic View of Ariake Sea and Unzen Fugendake from the Castle Keep
About this spot
Built in 1625 by Shigeyoshi Matsukura (松倉重政), this is the symbol of Shimabara. The beautifully white five-story castle keep is a reconstruction, and its interior functions as a museum displaying historical materials related to the Shimabara Rebellion and samurai armor. Climbing to the top floor of the keep reveals a grand panorama: the blue waters of Ariake Sea in the foreground, Unzen Fugendake looming directly ahead, and Shimabara Harbor—tonight's fireworks venue—spread below. The castle moat blooms with lotuses, and lush green summer foliage creates a pleasant walking path. It's the perfect starting point to savor the daytime atmosphere of the castle town while building anticipation for tonight's fireworks.
Fireworks details
Name: 島原温泉ガマダス花火大会
Date & time: 8/27 (Thu) Time TBA
Venue: 島原市・島原外港
Shells: approx. 2,000
島原温泉ガマダス花火大会は、有明海を舞台に約2,000発が夜空を彩る夏の風物詩です。「ガマダス」とは島原地方の方言で「がんばる」を意味し、地元の人々に愛されてきた大会です。海上から打ち上がる花火は遮るものがなく、広い有明海の夜空に大きく開く光の大輪が正面から楽しめます。潮の香りを含んだ夜風とともに見上げる花火は、海辺の大会ならではの開放感と迫力があります。対岸の熊本の灯りを遠くに眺めながら、島原の夏の夜を家族でゆっくり楽しみましょう。フィナーレが終わったら、混雑が落ち着くまで港周辺でゆったり余韻を楽しんでから帰路につくのがおすすめです。
Tips
荒天時の開催可否は大会公式発表や島原市の情報で確認してください。時間は未定のため、当日の大会情報を事前にチェックしましょう。終了後は島原外港周辺および島原駅方面の道路が混雑するため、時間差での帰宅が安心です。足元が暗くなるので小型ライトまたはスマートフォンのライトを活用してください。
Tips
Approximately 7 minutes on foot from Shimabara Station, or approximately 15 minutes on foot from Shimabara Harbor. Admission is 700 yen for adults. The stairs inside the keep are steep, so hold small children's hands when climbing. The top floor offers excellent views but can be windy. The castle ruins park is free to explore, and shaded areas along the moat are ideal for resting.
Best time to visit
Approximately 1 hour 30 minutes required. Afternoon on clear days offers the best views of the sea from the castle keep.
Access & map
〒855-0036 Nagasaki Prefecture, Shimabara City, Jonaichi 1-1183-1
Model course featuring this spot

2026 Shimabara Onsen Gamadasu Fireworks Festival Full-Day Course
Nagasaki
Explore features & model courses
Like this spot? Sign up free to save it to your own booklet as a plan or a want-to-go.