The Blue Lagoon needs no introduction. Named one of National Geographic's 25 Wonders of the World, it draws travelers from every corner of the earth to the otherworldly Reykjanes Peninsula — to those impossibly turquoise waters rising from 2,000 meters below the volcanic earth, rich with silica, algae and minerals found nowhere else on the planet. People come here for healing, for wonder, for the particular alchemy of geothermal seawater and arctic air that has made this place a genuine pilgrimage for those who take their wellbeing seriously. And for the vast majority of the millions who visit — the experience is genuinely transformative. Life-changing, even. The Blue Lagoon earns every superlative.
But then there are the few. The ones who pass through the public lagoon's extraordinary experience entirely and step through a private entrance that most visitors never notice — into a different world altogether. A world of subterranean cave saunas carved into 800-year-old lava, private geothermal lagoons, in-water massages that exist nowhere else in Iceland, and the kind of quiet, unhurried luxury that lets you feel the full weight of where you actually are. That world is The Retreat at Blue Lagoon. And we were privileged enough to experience it.
Arriving at the Blue Lagoon · The Reykjanes Peninsula · Iceland
"There is a version of the Blue Lagoon experience that exists entirely above and beyond what the public lagoon offers. A private world carved into the volcanic earth."
The Retreat — Not the Blue Lagoon You've Seen Before
The Retreat is not an upgrade to the Blue Lagoon. It is a separate world, operating at an entirely different frequency. An award-winning luxury resort encompassing a subterranean spa built into the volcanic earth, 60 private suites, Michelin-starred dining at Moss Restaurant, and its own exclusive geothermal lagoon — sourced from the same bioactive waters but yours almost entirely alone. The same silica. The same minerals. The same microalgae that National Geographic called a geothermal gift. But here, the ratio of water to people is entirely different. You enter through a private entrance. You are greeted by name. A spa host walks you through what the next several hours will hold. And then the volcanic earth receives you.
The spa itself is built into the lava — subterranean, intimate, extraordinary. Walking through the entrance feels like descending into the earth itself: the dark volcanic rock of the Reykjanes Peninsula surrounding you, the warmth rising from below before you have even changed, the sound of water moving through ancient channels in the stone. The architecture is not decorative. It is geological. You are not observing the volcanic landscape from a comfortable distance. You are inside it.
The Private Changing Suite — Where It Begins
The private changing suite — robes, slippers, dual walk-in showers, and amenities that set the tone
Each guest receives their own private changing suite — not a locker room, not a shared space, but a dedicated personal sanctuary with dual walk-in showers, plush robes and slippers, and a level of amenity that you would expect from the finest hotel suite. This is where the Retreat signals immediately and unambiguously what the next several hours will be. Before you have touched the water, before you have entered the spa proper, the standard has been set.
Blue Lagoon's signature spa products — silica, algae and minerals in every formulation
The Spa — Cave Saunas, Steam & the Waters
Beyond the changing suite lies the Retreat Spa itself — a world of cave saunas, steam rooms, cold plunge wells, fireplace lounges, and the private Retreat Lagoon. The cave sauna is one of the most extraordinary rooms I have ever sat in: built into the volcanic rock, the heat rising from the earth itself, the silence broken only by the sound of steam. The steam cave is equally extraordinary — warm, enveloping, ancient. These are not amenities bolted onto a hotel spa. They are expressions of the landscape.
The doors that lead deeper · Beyond this threshold — the outdoor thermal waters where the in-water massage experience awaits
Through those doors — and photography quite rightly stops here — lies the outdoor thermal oasis where the Retreat's most singular experience takes place: the in-water massage. Floating weightlessly in the mineral-rich geothermal waters of a private lagoon, the steam rising around you, the volcanic landscape of the Reykjanes Peninsula stretching out in every direction, while a therapist works on you in the water itself. It is not like any massage you have had before. The weightlessness of the geothermal water changes everything — the body releases tension it didn't know it was holding, the warmth opens everything the therapist touches, and the setting — open sky, volcanic earth, the particular silence of Iceland — makes the entire experience feel less like a treatment and more like a restoration. We left different people than we arrived.
From the waters — panning across to the main lagoon and amenity buildings
The Restaurant — Lunch With a View Unlike Any Other
The Retreat Spa Restaurant · The private lagoon beyond the glass · A lunch worth the journey alone
The Retreat — panning from the private lagoon across to the Spa Restaurant and Lounge · Light spa fare and premium dining available throughout the day
Lunch at the Retreat Spa Restaurant is taken in robes, in no particular hurry, looking out over the private lagoon and the volcanic landscape beyond. The menu is fresh, healthy, and genuinely excellent — the kind of food that feels restorative rather than merely satisfying. After the sauna, the steam, the massage, and the waters, the body wants exactly this: clean flavors, natural ingredients, the particular pleasure of eating well in extraordinary surroundings. We lingered. Nobody rushed us. Time operates differently here.
Through the Gate — The Blue Lagoon Itself
One of the Retreat's quieter privileges is a private access gate directly in the water — you swim through from the Retreat's lagoon into the main Blue Lagoon itself, joining the broader experience from the inside. We did exactly that, wanting to see it all. And here is what I will say: the Blue Lagoon is magnificent on its own terms. It is a wonder of the world for very good reason — the scale of the milky turquoise water against the black lava, the steam, the energy of thousands of people from hundreds of countries having a genuinely extraordinary experience together. Don't underestimate it. But having spent the morning in the Retreat — in the cave sauna, in the private lagoon, in the water with a therapist working on you in the stillness — the contrast is instructive. We stayed for a while, appreciated it fully, and swam back through the gate. The Retreat pulled us back.
From the Retreat — panning across the full Blue Lagoon public lagoons
From the water — panning across the main lagoon and public amenity buildings
The Guru · Patrick Raymond at the Retreat overlook · The subterranean volcanic relaxation room — carved into the lava
The world's great spas give you comfort, skill, and beautiful surroundings. The Retreat at Blue Lagoon gives you all of that — and then adds something that no spa anywhere on earth can manufacture: the particular alchemy of bioactive geothermal water drawn from 2,000 meters below the volcanic earth, the 800-year-old lava canyons surrounding you, and the extraordinary stillness of Iceland. The water does something to you. The silica, the minerals, the microalgae — they are not marketing language. You feel the difference in your skin the moment you step out. You feel the difference in your body for days afterward.
In the broader context of everyone who will ever visit Iceland — itself a privilege available to relatively few — the number who will experience the Retreat specifically is smaller still. It is one of those rare places where the exclusivity is not manufactured. It is simply the result of how intimate, how private, and how extraordinary the experience genuinely is. We left different people than we arrived. That is not a phrase I use lightly after 45 years and 60 countries.
Book in advance. Give yourself the full day. Do the in-water massage. Stay for lunch. Swim through the gate and back. And then stay a little longer than you planned — because you will want to.
The Retreat at Blue Lagoon · Reykjanes Peninsula · Iceland · 2026
Reviewed by Patrick Raymond · Decades of Luxury Travel · 60+ Countries