Rusutsu Resort
Hokkaido, Hokkaido
Summer outdoor Super Jumbo Pool includes a large flowing lazy river (流水プール) plus aqua coaster/slides and kids spray pools. Heated ~28°C outdoor water.
Outdoor spaces
Outdoor areas listed — check season and weather.
family
Outdoor pool tickets and height limits vary by attraction (e.g. aqua coaster from 130 cm). Check official seasonal rules.
Official confirmation
Hours and fees change — verify on the official site.