Kasen Kankyo Rakuen Oasis Park Water Play Plaza (Rainbow Fountain, Mist Play Area, Wanpaku Field)

About this spot

This is the free water play spot Kasen Kankyo Rakuen Oasis Park Water Play Plaza (Rainbow Fountain, Mist Play Area and Wanpaku Field) in Kasen Kankyo Rakuen (河川環境楽園) in Kakamigahara City (各務原市). The Rainbow Fountain runs from Saturday, April 25 to Wednesday, September 30, 2026, from 9:30 to 22:00, and is lit up from 18:00 to 21:00. The Mist Play Area runs from 9:30 to 21:00 between Saturday, July 18 and Monday, August 31, and from 9:30 to 17:00 at other times; it is a misty zone where even small children aged 3 and under can play safely. Wanpaku Field runs from 9:30 to 17:00 between Saturday, April 25 and Wednesday, September 30, and is designed for children aged 3 to 6 to move their bodies and play. The Rainbow Fountain has gentle water pressure, so even children who dislike water can get used to it little by little. Admission and parking are both free, and with shops and restaurants right nearby you can play for a long time while taking breaks and picking up extras.

Season & hours

Tips

Every area is cancelled in rain. Check whether it is running that day on the official website or the on-site information. Wanpaku Field and the Mist Play Area (outside July 18 to August 31) close at 17:00, so using that time as your benchmark lets you enjoy everything. Do not count on changing rooms; putting swimwear on under clothes before you leave makes changing smoother. Shade is limited at some hours, so a picnic sheet, hats and plenty of drinks are reassuring. The Rainbow Fountain is lit up from 18:00, so you can also plan to have dinner in the park and watch the fountain at night.

Best time to visit

Roughly three hours from 14:00 to 17:00. Starting to pack up in line with the 17:00 closing of Wanpaku Field leaves a comfortable margin for the trip home

Access & map

各務原市・河川環境楽園 オアシスパーク