Bath-only day use: adults (13-64) ¥850 daytime / ¥750 evening; seniors (65+) ¥450; children (3-elementary) ¥350. Bath+pool+training (full facility) ¥950 daytime / ¥850 evening. Hot spring tax ¥150 extra.
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Dry heat sauna room
Cold water plunge bath, typically used after sauna
Shared bathing area for all genders
Allows entry with visible tattoos
Welcomes children and families
Restaurant or dining open to visitors (not just hotel meal plans)
Shower, wash stations, soap and shampoo provided
Towels available to rent or borrow
Relaxation space for after bathing
On-site or nearby parking available
The open-air baths face Kashima Nada (鹿島灘), the stretch of Pacific coast in front of Ibaraki, so on a clear day you soak with the ocean filling the view. The water is dark, almost black, and strongly salty; it warms you through and the heat tends to linger well after you get out. Indoor baths, a sauna, and a cold bath round out the bathing area. The whole complex (Toppu Sante Taiyo, とっぷ・さんて大洋) is run by a city health foundation and also has a heated pool, gym, and restaurant, drawing a steady crowd of regulars.
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Last updated June 19, 2026