Water play in the spray under the summer sun
About this spot
Wanpaku Okoku (わんぱく王国) is a lush green valley park spreading out right by Yamanakadani Station on the JR Hanwa Line. In 2026, the water play plaza near the main gate operates from Monday, June 1 to Monday, August 31. It is cherished by local families as a spot where you can enjoy water play to your heart's content in the spray under the summer sun. Green mountains surround the area and there is plenty of shade, so you can take breaks between sessions of water play.
Season & hours
Name: わんぱく王国 水遊び広場
Date & time: 6/1 (Mon)–8/31 (Mon)
Venue: 大阪府阪南市石田43番地・わんぱく王国(正門近く水遊び広場)
Tips
Checking the operating hours and same-day conditions in advance in Hannan City's official information is reassuring. Weekends during the summer holidays can be crowded, so take frequent breaks and stay hydrated. Checking where the changing space is beforehand is reassuring.
Best time to visit
Arriving from 13:00 lets you enjoy water play comfortably until evening
Access & map
43 Ishida, Hannan City, Osaka, Wanpaku Okoku (water play plaza near the main gate)
Model course featuring this spot
2026 Wanpaku Okoku (わんぱく王国) Water Play Plaza Full-Day Course
Osaka
Explore features & model courses
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