Phoenix Seagaia Ocean Tower
フェニックス･シーガイア･オーシャン･タワー
Resort tower with a pine-forest onsen wing
Day Use
YesClosed Wednesdays 10:00-12:00 for maintenance, except this closure is itself suspended from October 1, 2026 through January 31, 2027, while the Shingetsu bath is being renovated.
Standard walk-in admission to Tsukuyomi is 1,100 yen. Seagaia Point Membership Club members pay 1,000 yen, and a member's accompanying child (ages 6 to 12) pays 500 yen.
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Sauna room of any kind
Cold water plunge bath, typically used after sauna
Bathing Arrangements
A private bath you can reserve for yourself or your group
Day visitors can book the private bath, not only overnight guests
The main bath welcomes walk-in day visitors, but the reservable private baths are for overnight guests only.
Shared bathing area for all genders
Policies & Services
Allows entry with visible tattoos
Welcomes children and families
Children may bathe with a parent in the opposite-sex bath up to about age seven; one reservation-only bath is limited to junior-high age and older.
A restaurant or dining room open to visitors, not only meals for overnight guests
Shower, wash stations, soap and shampoo provided
On-site or nearby parking available
Views
Sea
ForestAbout
Phoenix Seagaia Ocean Tower is the main tower of the Seagaia resort, set among pine forest on the Miyazaki coast. The onsen wing beside it, Shousenkyu (松泉宮), has several bathhouses: Tsukuyomi (月読), an open-air bath right in the pines, is open to day visitors as well as hotel guests, while a newer building, Mangetsu (満月), opened in August 2026, adds a sauna and a mineral mud treatment. A handful of reservation-only private baths are for overnight guests only, including open-air cottages called Hanare-yu (離れ湯) and a single room, Oyunomiya (おゆのみや), built around a formal 'way of bathing' (湯道, yudo) promoted by scriptwriter Kaoru Koyama (小山薫堂). The water is drawn from 1,000 meters underground, from a layer said to hold traces of an ancient sea, and is mineral rich and locally said to be good for the skin. A walkway sheltered from the wind by walls and warmed by heaters in winter leads from the tower to the baths, and guests often stroll it in yukata.
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Last updated September 29, 2026