Welcome to the warmth at New York's first public floating sauna

We invite the Capital Region to experience KOS on Saratoga Lake! Use the discount code KosOpening! to grab your seat in the heat, valid for one free private group session OR a friend to join you in the social sauna. This offer is valid through December 15. Welcome!

Reserve your free spot
Illustration of our sauna spirit, with ripples radiating outward in water.

Meet our Sauna Spirit! Inspired by Nordic mythology, the sauna tonttu guide the transformation of body and soul.

A new wave of wellness arrives in Saratoga Springs, New York

Inspired by Norway’s stunning fjord saunas and amplified by the rich, healing mineral waters of Saratoga Springs, KOS brings an authentic Nordic wellness experience to upstate New York - just 3 hours north of Manhattan.

Our sauna spirit walking, wearing a beanie, jacket, pants, and shoes, with medium-length hair.

Revitalize your senses at our floating sauna oasis

Your visit to KOS includes access to the 15-person sauna, lake plunge, roof terrace, changing rooms, and drinking water, straight from Saratoga’s treasured mineral springs. Please bring two towels (one for sitting, one for drying off), water shoes or flip-flops, and a refillable water bottle.

  • People relaxing inside a sauna with large windows overlooking a lake.

    Social sauna session

    Relax and rejuvenate during a 90-minute session with up to 15 people. Come solo, bring a friend, or make new ones!

    Reserve
  • Rendering of a floating sauna with large glass windows on a calm body of water, with a person inside visible through the window, and a background of trees and a bridge.

    Private group session

    Gather up to fifteen of your nearest and dearest for an exhilarating experience we hope you'll never forget.

    Reserve
  • A floating sauna with a circular window on a lake at sunset, with three people walking on a pier and trees in the background.

    Personal membership

    Members get discounts on social and private sessions + 10% of fees fund local seed preservation and biodiversity.

    Buy now
  • Interior view of a wooden sauna with large glass doors and windows overlooking a lake with boats and houses, and a cloudy sky.

    Organizational membership

    Give employees, partners, and customers the gift of heat - perfect for team-building or entertaining clients.

    Buy now
  • A floating sauna with large windows, painted in shades of green and natural wood, docked on a calm river near a bridge, with a tree branch with long leaves on the right side and a sunset sky in the background.

    Monthly unlimited pass

    Unlimited use for our most avid fans - pay just $75 per month! Personal membership is required to purchase.

    Buy now

  • Team-building and special events

    Curate the perfect team-building session or special event, followed by a delicious meal at Lago by Druthers.

    Contact
Our sauna spirit holding the ladle for löyly.

Launching November 15!

We are thrilled to fire up the stove for the public on Saturday, November 15, 2025. We will be open thereafter on Wednesdays-Sundays from 7 AM - 10 PM.

A massive thank you to Saratoga Springs and the Capital Region for your overwhelming support, excitement, warm welcome, and patience as we navigated unchartered waters. We couldn’t have chosen a better community for our floating sauna. May everyone who comes together to sweat on our benches leave feeling positively transformed.

🔥💦🔥

Illustration of our sauna spirit, with ripples radiating outward in water.

Come for the health benefits. Come back for the fun!

What are the benefits of regular sauna use?

Humans have boosted physical and mental health with cycles of heat, revitalization, and rest for centuries. Benefits include reduced blood pressure, heart disease, risk of stroke, Alzheimer’s, respiratory disease, arthritis, headache, and flu. Recent studies show that the brain is more focused and efficient post-sauna, enhancing focus and concentration. It’s also flushed with β-endorphins, giving your day a euphoric boost!

For whatever reason your visit, we look forward to welcoming you into the warmth at KOS!

What is KOS?

“Kos” (pronounced “cozy” without the y) in Norwegian means warm and simple pleasures, often shared with others. After living in Oslo for seven years, our Creator Kate got hooked on the floating sauna and knew she must bring it home to the US for others to enjoy.

We are a year-round, community-driven public sauna business offering communal sessions, private rentals, annual memberships, classes and rituals, team-building, and custom events in our 15-person floating sauna and roof terrace on Saratoga Lake, NY.

Illustration of our sauna spirit hiding behind the löyly bucket.

The region is buzzing!

Kos media coverage from Saratoga Living magazine
Kos media coverage from Albany News 10 ABC
Title of The New York Times Style Magazine with a quote about floating saunas opening in the United States, mentioning KOS sauna on Saratoga Lake in New York.
Kos media coverage from The 518 newsletter
Kos media coverage from the Times Union newspaper

Gift cards are now available

Share the gift of health, happiness, and connection all year with a gift card to KOS.

Buy now