2026 Ageo Maruyama Park Seseragi Stream (上尾丸山公園 せせらぎ) Water Play Area Full-Day Course

A relaxed full-day course close to home, starring the free water play area “Seseragi” (せせらぎ) in Ageo Maruyama Park (上尾丸山公園) in Ageo City. The Seseragi is open year-round except on cleaning days, from about 9:00 to about 17:00 in April through September and from about 11:00 to about 15:00 in October through March. In the morning, meet small animals at the children's animal park inside the park, and at midday enjoy shopping and lunch at Ario Ageo (アリオ上尾). Once you have eaten, it is finally time for the Seseragi. It is a family-friendly water play area where you can watch over your children from the shade as they splash about in the shallow flow. A day out that feels just like Ageo City, easy to enjoy to the full even close to home.