⛰️ Chubu · Niigata
ホテルグリーンプラザ上越
Joetsu Kokusai Playland Water Park with water bobsleds (150 m / 100 m), Wonderful Slider, Balloon Slider, and more.
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Notes & caveats
Niigata · Myoko
Meal tags: dinner / breakfast
Sources
Hours and fees change. Always confirm on the official site. We do not invent prices or star ratings.
A. Joetsu Kokusai Playland Water Park with water bobsleds (150 m / 100 m), Wonderful Slider, Balloon Slider, and more.
A. Seasonal / outdoor-focused. Confirm opening dates on the official site.
A. Limits vary by attraction (e.g. Wild River: age 5+ and 110 cm+).
A. We do not list prices here (they change often). Check Booking.com, Agoda, or the hotel’s official site for live rates.
Chubu, Nagano · Year-round
Indoor heated pool with a 4.2 m high / 40 m long waterslide. Year-round (maintenance periods apply).
Indoor option
Indoor / all-weather facilities noted for this stay.
Year-round oriented
Facilities aimed at year-round use (confirm maintenance closures).
family
Solo riding banned under age 6 or under 120 cm. Two-person lap riding may be allowed per official FAQ.
Chubu, Aichi
Sea Palace Rainbow Pool (summer) with two waterslides, wave/current, and toddler pools.
Outdoor spaces
Outdoor areas listed — check season and weather.
family
Waterslides: 120 cm+ height.
Official confirmation
Hours and fees change — verify on the official site.
Chubu, Mie
Nagashima Resort “Jumbo Saltwater Pool” with many large waterslides (e.g. Mega Abyss). Guest pool tickets available. Indoor kids spa area too.
Indoor option
Indoor / all-weather facilities noted for this stay.
Outdoor spaces
Outdoor areas listed — check season and weather.
family
Height/weight limits per slide (check facility rules).
Affiliate / ad links. We may earn a commission if you book.