Wanpaku Okoku Waterside Plaza (わんぱく王国 水辺の広場)

Flow of the course

About this spot

Wanpaku Okoku Waterside Plaza is a free water play area at a park in the valley of Hannan City. In 2026 the season runs from Monday, June 1 through Monday, August 31, between 9:30 a.m. and 5:00 p.m., with water pumped from the river flowing right nearby into a shallow waterside area. Since the system uses natural river water directly, water may not be able to be released if the river's flow drops during extreme heat or similar conditions. There's a rule to check in at the management building's office before using the facility, so please stop by the management building first when you arrive. The site's appeal lies in being surrounded by mountains with plenty of shade, offering a coolness completely different from water play areas in urban areas. Admission is free, parking is 500 yen for a standard car, and there is a restroom in the management building.

Season & hours

Tips

When you arrive, please check in at the management building's office before using the facility. The amount of water depends on the river's condition that day, so if you're traveling from far away, it's best to check with Hannan City in advance. Have children wear water shoes or sandals that won't easily come off, to avoid cutting their feet on stones or gravel. Since it's in the mountains, mosquitoes and horseflies appear. Insect repellent and a light jacket to put on once the sun goes down will make things more comfortable.

Best time to visit

Plan on about 3 hours starting at 1:00 p.m. The sun sets early in the valley, and after 3:00 p.m. the shade spreads and it turns noticeably cooler.

Access & map

阪南市・わんぱく王国