These are the saunas where the cold plunge is part of the design, not an afterthought. On-site tubs, troughs, or dip pools mean the hot–cold–rest cycle is available every session without planning the open-water swim yourself. Plan 90 minutes minimum to run the cycle properly rather than rushing a single long sit.
In NYC Metro, 8 of the curated saunas fit this cut. See the full NYC Metro region guide for every venue, or keep scrolling for just the sauna with a cold plunges.
Every sauna with a cold plunge in NYC Metro

Bathhouse Atlantic Ave
$$Brooklyn, United States
FinnishSteam

Bathhouse Flatiron
$$New York, United States
FinnishSteam

Bathhouse Williamsburg
$$Brooklyn, United States
FinnishSteam

Island Spa & Sauna
$$Edison, United States
FinnishSteam

QC Spa New York
$$$New York, United States
FinnishSteamInfrared

Russian & Turkish Baths
$$New York, United States
FinnishSteam

Spa Castle
$$$Queens, United States
FinnishSteamInfrared

World Spa
$$$Brooklyn, United States
FinnishSteamInfrared
