🗼 Kanto · Chiba
龍宮城スパ・ホテル三日月 龍宮亭
Year-round indoor aqua park with ~70 m waterslide. Garden pool and more open in summer.
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Notes & caveats
Chiba · Kisarazu
Meal tags: dinner / breakfast
Sources
Hours and fees change. Always confirm on the official site. We do not invent prices or star ratings.
A. Year-round indoor aqua park with ~70 m waterslide. Garden pool and more open in summer.
A. There is year-round or indoor equipment (excluding maintenance/closures). Always confirm on the official site.
A. Secondary sources often say indoor slide is 120 cm+. Confirm on the official site.
A. We do not list prices here (they change often). Check Booking.com, Agoda, or the hotel’s official site for live rates.
Kanto, Tochigi · Year-round
Indoor Garden Spa waterslide ~20 m long with ~4 m drop, plus current pools. Rooftop pool in summer.
Indoor option
Indoor / all-weather facilities noted for this stay.
Year-round oriented
Facilities aimed at year-round use (confirm maintenance closures).
Outdoor spaces
Outdoor areas listed — check season and weather.
Kanto, Kanagawa
Attached/adjacent Oiso Long Beach has two ~140 m waterslide courses (A 139 m / B 140 m) plus kids slides.
Outdoor spaces
Outdoor areas listed — check season and weather.
family
Main slides: under 120 cm and under age 6 not allowed. Kids Water Paradise: ages 3–elementary (under 125 cm).
Official confirmation
Hours and fees change — verify on the official site.
Affiliate / ad links. We may earn a commission if you book.