BOTANIST and SALONIA to be Featured as Amenities at "niko and ... BASE," a Complex with a Sauna Produced by "niko and ..." Opening Thursday, April 23
Adastria is launching its first park project, "niko and ... BASE," in its founding city of Mito, Ibaraki, opening on April 23. The facility will include a sauna and feature "BOTANIST" and "SALONIA" products from I-ne Corporation as amenities, offering a new customer experience through this cross-industry collaboration.
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- 📰 Published: April 8, 2026 at 21:00
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Adastria Co., Ltd. (Headquarters: Shibuya, Tokyo; President: Yoshiteru Kitamura), part of the andStays HD Group with the mission to “Play fashion!” and operating over 40 multi-brands, is undertaking its first park project in Senba Park, Mito City, Ibaraki Prefecture, the company's birthplace. The style-editorial brand "niko and ..." will produce the facility and space, which will open as "niko and ... BASE" on Thursday, April 23, 2026.
The "niko and ... BASE" facility is located in a corner of "Mito Koubun Terrace," a new lakeside attraction in Senba Park, Mito City, Ibaraki Prefecture, utilizing the Park-PFI system.
The sauna attached to "niko and ... BASE" will feature products from the botanical lifestyle brand "BOTANIST" and the minimalist beauty appliance brand "SALONIA," both developed by I-ne Co., Ltd. (Headquarters: Chuo-ku, Osaka; President: Yohei Onishi), as amenities.
"niko and ..." develops projects that propose unique things and experiences through the brand's nine elements of “uni9ue senses” (clothing, food, housing, play, knowledge, health, travel, music, LOCAL). In its new park project challenge, "niko and ... BASE," the brand will permanently establish its first-ever sauna facility with the concept of "play, eat, and get refreshed...".
As a space for slow relaxation, the complex will feature a cafe lounge by "niko and ... COFFEE," a barbecue area that can be enjoyed empty-handed, a multi-purpose court for pickleball and various events, and a running station, making it a facility that can be enjoyed by a wide range of generations throughout the year.
The overall supervision of the permanent sauna at "niko and ... BASE," including operation and facility design, is handled by Mr. Nodakurakushonbebe of The Sauna, a leader in the sauna industry. Wrapped in the scent of wood in a sauna room finished with Yamizo timber, and through an open-air bath deck with a cold water bath, it provides a "totonou" (state of deep relaxation) experience with the flow of heat/wind/cold/light.
The materials used—wood, tile, metal, and greenery—express a warm interior that utilizes the craft-like feel of "niko and ...". Viewing the park as a gym, the sauna is supervised under the theme of a "park gym sauna," proposing a form of sauna that is an extension of lifestyle. You can experience a full set: exercising in the Mito/Senba Park field, entering the sauna, and relaxing in the park.
The sauna is divided for men and women, with ample space in each for leisurely relaxation. A log sauna is also available, allowing for self-löyly (pouring water on sauna stones).
The sauna's powder room is named "Sauna Haircare Room by BOTANIST & SALONIA," and will be equipped with "BOTANIST" and "SALONIA" products that fit the theme of "refreshing both mind and hair." Guests can use "BOTANIST"