A Saitama prefectural park stretching along the 小合溜井 (Koai-damei), a wetland created about 260 years ago between the Edo and Nakagawa rivers, originally a flood-control and irrigation reservoir for Edo. Today, together with Tokyo's nearby Mizumoto Kōen, it forms one continuous green-and-water space. Official address 〒341-0037 埼玉県三郷市高州3丁目362, area 16.9 hectares. Managed by Misato Yoshikawa Partners (Seibu Green Management Co. and Seibu Landscape Co.); since July 2026 it has carried the commercial name ‘OGISHIみさとパーク’ under the naming rights scheme for Saitama's prefectural parks.
ℹ️ Free entry, open all day (‘終日開放’). It has lawns and large wooden play structures, and hosts seasonal blooms (cherry blossoms, irises in June). There are 20 barbecue pitches at 1,120 yen each. Management office: tel. 048-955-2067, hours 9:00–17:00.
🚉 Kanamachi · 35 min walk
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Misato Station — North Exit6.5 kmphoto by まも(Mamo) · Public domain