Learn about Nagai and Mogami River history in an accessible way, also ideal for resting on a hot afternoon
About this spot
A facility displaying Nagai City's history, folk culture, and Mogami River boating culture in an easy-to-understand manner. Long ago, the Mogami River flourished as a major artery for goods distribution, with Nagai developing as an important relay point. Through the exhibits, you'll come to appreciate that the river and town scenery you've walked today is built upon layers of history. It's also a welcome bonus for families to be able to view exhibits while cooling off on a hot summer afternoon. There are actual displays of farming tools and household items that interest children, bringing Nagai's cultural heritage to life.
Fireworks details
Name: ながい水まつり 最上川花火大会
Date & time: 8/8 (Sat) 19:30–
Venue: 長井市・最上川河川緑地公園
Shells: approx. 3,500
2026年8月8日(土)19時30分開始、ながい水まつりのクライマックスを飾る最上川花火大会です。最上川の川上から打ち上がる約3,500発は、山形の大河・最上川の川幅いっぱいに広がり、川面に映る光の揺らぎとともに夜空を彩ります。川沿いの会場は周囲の建物が低く視界が広いため、大きな花火を遮るものなく正面から楽しめるのが最大の魅力です。山形の夏祭りの伝統を受け継ぐ水まつりの夜は、地元の人々と一緒に川の風と花火の音に包まれる、旅の忘れられない1ページになるはずです。フィナーレの連発が川と空を同時に照らす瞬間を、家族全員でじっくり見届けましょう。
Tips
荒天時の開催可否は長井市・長井商工会議所の公式発表で必ず確認してください。終了後は会場周辺の道路と長井駅方面が混雑するため、フィナーレ後は河川敷でしばらく余韻を楽しんでから移動するのがおすすめです。フラワー長井線の帰りの電車時刻は事前に確認しておきましょう。足元が暗いので小さなライトがあると安心です。
Tips
Admission is approximately 200 yen for adults (confirm in advance). Air conditioning is effective, making it ideal for resting a body tired from outdoor heat. Confirm closing hours before your visit. The location is convenient for a stop on your way back toward Nagai Station.
Best time to visit
Approximately 1 hour required. Viewing while cooling off in the hot afternoon is recommended.
Access & map
〒993-0063 Yamagata Prefecture, Nagai City, Kusaoka 2768-1
Model course featuring this spot

2026 Nagai Water Festival Mogami River Fireworks Display - Full Day Experience Course
Yamagata
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