Welcome to the third iteration of Vogue’s global spa guide, a compendium of the 100 best spas in the world, compiled based on first-person reviews and careful editing. This year, we’ve renewed our focus on establishments that have established a reputation for exceptional care of body and mind, though there is a great variety in the list. Whatever you are seeking when it comes to wellness, there is something here for you.

Why go here?

When The Chancery Rosewood landed on Mayfair’s Grosvenor Square last September, it caused a major splash. What was formerly one of the city’s most inaccessible buildings—for five decades, the fortress-like concrete and Portland stone behemoth served as the American embassy—had opened for business as the newest über-über-luxury hotel, its 144 lavishly appointed suites offering ’60s-inspired Mad Men–worthy interiors, private bars stocked with complimentary soft drinks and snacks, enormous Carrara marble–clad bathrooms, and even butler service. (The unveiling of London’s first Carbone outpost within the building also generated plenty of buzz.) So it’s little wonder that the hotel has already become a favorite for A-listers traveling through town for movie premieres or headline concerts—as well as the location of a Vogue party or two.

You could argue, however, that its crown jewel is the 12,000-square-foot Asaya Spa, a subterranean wonderland of wellness that features the only full-length, 25-meter pool in Mayfair, five private treatment rooms, and a sauna, steam room, vitality pool, and cold plunge. There’s a very impressive fitness center too, outfitted with sleek, sandstone-hued Artis Luxury by Technogym equipment. Down here in the soundproofed bowels of the building, you’d never believe that the chaos of Oxford Street was just a few blocks away.

What’s the vibe?

The building is widely considered to be one of London’s greatest architectural masterpieces. Designed by Eero Saarinen in the 1960s, it’s a celebration of American modernism with a few more flamboyant details, such as the massive gilded eagle that sits atop the building—now the centerpiece of the rooftop Eagle Bar—and the rhythmic concrete zigzags that lend the façade its eye-catching shimmer. With the help of David Chipperfield, it’s been leveled up once again: The legendary British architect endeavored to open its colossal interior spaces, making them feel light and airy. No mean feat for a former bureaucratic building, but if its jaw-droppingly dramatic lobby is anything to go by, it’s been achieved.

The design of the Asaya Spa, meanwhile, was overseen by Yabu Pushelberg, the Canadian design studio known for its work on the Four Seasons and Peninsula hotels in New York. The end result is a complex that feels less like a spa and more like a private members club: Think vast expanses of plush, padded walls, brass accents, and gentle lighting that will make you look like you’ve had a full eight hours of sleep even if you’ve just got off a long-haul flight. The treatment rooms, meanwhile, have an equally moody air, with wood paneling and miniature sculptures on shelves, along with sumptuous marble bathrooms for a decadent posttreatment soak.

What should you try?

The massage options were developed in collaboration with the cult-favorite aromatherapy brand Moods, offering eight “neuro-aromatic” blends designed to alter your emotional state. Clearly my therapist, Divah, had noticed my own mood was a little glum—probably at least in part due to the driving London rain that had drenched me on the way over—and after a quick consultation, including a blind testing of multiple formulas to see which attracted me most, suggested Euphoric, a floral, citrusy scent with notes of neroli, geranium, and petitgrain. It was just the ticket. While Divah also gave me a brief overview of the various techniques involved in the massage to come—myofascial release, lymphatic drainage, effleurage, and pressure-point work—once things got underway, what it mostly felt like was just a really, really excellent deep-tissue massage, with all of the dull throb of knots being worked out and that loose, light tingling feeling in the shoulders posttreatment that tells you something’s shifted. Afterward, I sat to sip chamomile tea by a crackling fireplace before heading to lounge on a sofa in the jewel-box swimming-pool room, feeling very relaxed indeed.

What else do we need to know?

As is now customary at any high-end hotel spa in 2026, there’s a cutting-edge medical wellness center within the spa too. Overseen by aesthetic doctor Wassim Taktouk](https://www.tatler.com/address-book/profile/dr-wassim-taktouk-taktouk-clinic){: target= “_blank”}, the clinic offers advanced injectables as well as medical-grade skin-care treatments for those willing to go all the way in search of some extra glow.

Who can go?

Hotel guests have complimentary access to all the spa facilities. Day spa passes are available, as is an Asaya Club membership scheme, which offers unlimited access to the fitness studio, pools, and thermal facilities.

Booking details for Asaya Spa at The Chancery Rosewood

Address: 30 Grosvenor Square, London W1K 9AN, United Kingdom

Read more from Vogue’s Global Spa Guide.