Welcome to the third iteration of Vogue’s global spa guide, a collection 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 places 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?

An alpine ski resort tucked into the wilds of southwest Montana’s Rocky Mountains might not be the obvious first choice for a wellness getaway, but the new One&Only Moonlight Basin—which opened in November 2025—delivers the kind of renewal that only comes from the great outdoors. Set within 17,000 acres of protected land on the untamed edge of Big Sky, the expansive resort offers awe-inspiring views of snow-capped peaks, private lakes, and lodgepole pine forests in every direction.

Its unparalleled access to nature might be enough to lull anyone into an instant state of bliss, but thanks to the innovative treatment offerings in the 17,000-square-foot stand-alone spa—which also boasts incredible views—the entire resort feels like one immersive sanctuary.

What’s the vibe?

“We call it the wellness temple,” spa director Michael McDonald says of the spa, which also houses an atrium-encased saltwater swimming pool, eight treatment rooms, and a state-of-the-art fitness center that rivals any big city’s sleekest gym. “We are in this beautiful setting, and it’s all about bringing nature into everything we do—from the native botanicals to just being outside hiking, biking, skiing, and snowboarding.”

If nature is the main draw, the property’s modern architecture and cozy-minimalist interior design is a close second. Conceived by Tom Kundig—an architect known for his rugged-elegant mountain-house builds—the spaces are meant to merge with the surroundings and center around warm wood, raw stone, steel, and wall-to-ceiling windows. “We want to make sure you’re nestled in nature,” the property’s general manager, Serge Ditesheim, explains.

In the spa, you’ll also be nestled in a lot of supersoft textures: fuzzy blankets, silky sheets, plush slippers, and cozy robes. “Everything goes back to the five senses,” McDonald says. “The idea is that everything you touch and everything you feel is something you may want to take home.”

The history?

Though the resort is barely two seasons in, the spa has already established itself as one of the most enticing wellness destinations in Big Sky—thanks no doubt to the One&Only brand’s reputation for results-driven treatments that blend a sense of place with the latest innovations in technology. At Moonlight Basin, the focus is on longevity and athletic recovery that eases the effects of dry mountain air and extreme temperatures: “Our real goal is to get you back out on the mountain so that you can optimize your time here,” McDonald says.

What should you try?

Though the spa offers everything from Himalayan-salt massage to cranial-sacral therapy, the signature treatments are the way to go. Many center around the One&Only’s exclusive brand partnerships and local collaborations, and some clock in at an indulgent 120 minutes or more.

I was lucky enough to experience two—and the attention to detail during each left me not only blissed out but also duly impressed. During the 120-minute Recovery Ritual, my entire body was dry exfoliated and massaged with warm CBD-infused oil and cooling marble stones. Then it was gently pummeled with a percussion-therapy device, followed by an intensive, tension-relieving deep-tissue massage for my scalp, neck, and shoulders. The 120-minute Contour Facial was equally extensive and featured a customized skin analysis, diamond-tip microdermabrasion, lymphatic drainage massage, microcurrent, regenerative Lyma laser, oxygen, and a generous slathering of masks and serums from Augustinus Bader, Epicutis, and Auter, leaving my face impossibly snatched and dewy.

Don’t miss out on a Pilates, sculpt, or yoga class with in-house instructor Wendy Miller, either. A class or private session with her is nothing short of revelatory, thanks to her judgment-free vibe and a personalized format that focuses on posture, balance, and mobility.

What else do we need to know?

Though the treatments are extraordinary, the spa’s common spaces are also noteworthy—especially the oxygen-bar relaxation room, which feels like a stroke of genius in the high-altitude environment. It’s outfitted with cushy chaise lounges, faux-fur blankets, and a central fireplace and features half-frosted windows that allow focused views of the treetops and mountaintops outside. There’s also an open-air onsen and a cold plunge.

In terms of outdoor activities, the resort offers endless options, including fat-tire biking, mountain biking, snowshoeing, Nordic skiing, downhill skiing, clay shooting, hiking, tennis, stand-up paddleboarding, fly-fishing, and guided safaris in Yellowstone National Park, which is about an hour’s drive away. It also has a private, heated gondola that takes skiers and snowboarders straight to Madison Base, as well as gear-valet, storage, and rental services.

Who can go?

You don’t have to be a guest at the One&Only Moonlight Basin to enjoy the spa. That said, you might want to book a long stay—especially because the entire resort feels so one-of-a-kind and there’s so much to do. Accommodations are plush: 73 rooms and suites spread across three east-west-facing lodges with balconies, fireplaces, and soaking tubs, as well as 19 freestanding cabins with hot tubs and a collection of private homes. The resort also has three restaurants, a library, a bar, and countless fireplaces and cozy nooks, both indoors and out. There’s also no shortage of wildlife to encounter—including fox, elk, moose, bald eagles, bears, and more.

Booking details for One&Only Moonlight Basin

Address: 77 Roosevelt Rd, Big Sky, MT 59716

Read more from Vogue’s Global Spa Guide. Read more about One&Only Moonlight Basin at the Condé Nast Traveler Hot List.