GROHE SPA believes the bathroom can become the new wellness room

The luxury bathroom has spent years acquiring things: larger tubs, smarter showers, better stone, more elaborate fittings. GROHE SPA’s proposition is slightly different. What if its next evolution concerns less what goes into the bathroom, and more what happens to us inside it?

That idea sits at the centre of Aqua Sanctuary, the brand’s immersive installation at Bangkok’s Nai Lert Park, following earlier iterations in Milan and New York. Across three interconnected “sanctums”, GROHE SPA presents the bathroom as an intentionally multisensory environment, with water, light, materials, and customisation orchestrated around different states of wellbeing.

There is a useful etymology behind the concept. GROHE SPA takes its name from Salus Per Aquam, Latin for “Wellbeing Through Water”, and treats water as more than a functional necessity. At Aqua Sanctuary, it becomes an architectural material in its own right, working alongside light, shadow, sound, and physical surfaces to alter the experience of a space. 

The first sanctum offers perhaps the most futuristic expression of this. Its Rainshower Icon 3D concept takes on branching, organic forms inspired by the forest, while an overhead oculus moves visually from dawn to dusk. The accompanying Icon 3D faucet continues the experiment with 3D metal printing, which allows GROHE SPA to reduce material while creating forms that would prove difficult to manufacture conventionally. 

If the first room explores sensation, the second concerns coherence. The Atrio Private Collection incorporates Caesarstone quartz accents into its fittings, while GROHE SPA’s collaboration with London design studio Buster + Punch extends a common design language across bathroom fixtures, hardware, and lighting. Four finishes — Brushed Warm Sunset, Brushed Cool Sunrise, Supersteel, and Phantom Black — allow these disparate elements to read as one interior rather than a collection of bathroom products. 

This emphasis on personalisation matters because luxury has increasingly migrated from conspicuousness towards specificity. GROHE SPA is betting that the bathroom will follow: less standardised suite, more environment calibrated around its owner.

The final sanctum makes that argument most explicitly, organising the experience around three rituals — Preparation, Relaxation, and Rejuvenation. GROHE SPA’s Allure Gravity collection appears in Phantom Black with Caesarstone Vanilla Noir details, accompanied by modular Rainshower Aqua Tiles and concealed Grohtherm controls. Interchangeable cover plates and multiple configurations allow fittings to respond to the architecture around them rather than dictate it. 

Behind GROHE SPA sits Japanese housing and water-products group LIXIL, whose water technology business accounts for 53.7 per cent of group revenue; LIXIL reported ¥1.51 trillion in revenue in March 2026 and operates across more than 150 countries. The scale gives some commercial context to what could otherwise look like a purely conceptual design exercise.

Because Aqua Sanctuary ultimately proposes something larger than an expensive shower. As homes and hotels increasingly compete on wellness, the bathroom may cease to function as an ancillary room and become one of the property’s principal experiential spaces. GROHE SPA’s argument is that water — something architecture has always had to accommodate — can instead become something architecture begins with.