Saunas open late in New York City

Large Korean jjimjilbang in Palisades Park, NJ with multiple sauna rooms, hot baths, a restaurant and day passes.

Bathhouse in Morganville, NJ with four saunas, a steam room, cold plunge, outdoor hot tub, massage and a BYOB restaurant.

Brooklyn bathhouse on Atlantic Ave with hot, neutral and cold pools, event sauna, banya, infrared sauna, steam room and an outdoor pool and sauna.

Flatiron bathhouse in Manhattan with six thermal pools, a banya, dry and infrared saunas, a steam room, and daily guided sauna sessions.

Large Brooklyn bathhouse with banyas, saunas, hammams, a snow room, cold plunge, onsen pools, treatments and a restaurant lounge.

Co-ed day spa in Fair Lawn, NJ with Russian dry and wet saunas, steam rooms, salt room, infrared sauna, ice plunge and a lap pool.

Russian banya, Turkish steam room and a heated swimming pool in Brooklyn, with a restaurant and platza treatments.

Russian-style bathhouse on Coney Island Avenue in Brooklyn with steam rooms, cold plunge pools, platza treatments and private rentals.

Korean day spa in Edison, NJ with dry saunas, a steam room, four soaking tubs, a gender-separated bathhouse and spa services.

Guided sauna and ice bath sessions with a social commons in Flatiron, New York, near Madison Square Garden.

Guided sauna and ice bath venue at 25 Kent Ave in Williamsburg, Brooklyn, with a social commons, passes and memberships.

Private infrared sauna suites with red light therapy and a cold SNØ shower in the Flatiron district of New York City.

Historic East Village bathhouse with saunas, steam rooms, a cold plunge pool, a roof deck and a restaurant.

Korean jjimjilbang in Midtown Manhattan with dry saunas, a salt room, gender-separated steam room and hot pools, plus spa treatments.

Old World style bathhouse in New York's Financial District with stone sauna, steam room, infrared sauna, cold plunge, pool and a Russian restaurant.

Russian banya in Freehold, New Jersey with a classic sauna, Russian Parnaya, steam room, cold plunge, jacuzzi and a BYOB kitchen.

Russian bathhouse in the Sea Gate area of Brooklyn with steam rooms, dry sauna, Turkish bath, ice-water pools, a Jacuzzi and a restaurant.

Traditional Korean day spa in Flushing, Queens with gender-separate nude bathing areas, co-ed dry saunas, and a restaurant.

Private infrared sauna suites with red light therapy in Williamsburg, Brooklyn, offering intro sessions, packs and monthly memberships.

Day spa near Prospect Park in Brooklyn with three saunas, a steam room, cold plunge, hot soaking pools, and massage, plus four-hour day passes.

Men's spa in Spring Valley, NY with dry and wet saunas, a cold plunge, a hot tub, a mikvah and a VIP lounge.

Brooklyn spa in Williamsburg with a dry sauna, wet steam sauna, cold plunge and inground jacuzzi, with separate men and women hours.

Private deep-water cold plunge and hot-cold contrast therapy suites in Englewood, NJ, with drop-in sessions and memberships.

Private spa suites in Brooklyn with dry sauna, steam room, hydrotherapy pool and a cold plunge in the largest suite, booked for groups of up to 8.

Williamsburg bathhouse with eight thermal pools, banya, dry and tropical saunas, a steam room, cold plunges and a rooftop pool.

Membership-based Japanese neighborhood sauna on the Lower East Side with dry heat saunas, a cold pool, lockers and showers. Adults only, no walk-ins.

Membership-based Japanese neighborhood sauna in Williamsburg, Brooklyn, with two communal dry heat saunas, a cold pool and a relax lounge.

24-hour Manhattan day spa with jade igloo sauna, herbal steam room, soaking tubs and baked-clay sauna, plus massage, scrubs and facials.

Membership-based Japanese-style neighborhood sauna on Franklin St in Greenpoint, Brooklyn, with communal dry saunas and a cold pool.

Thermal bath house in a restored 1883 textile factory in Tribeca, Manhattan, with a skylit warm bath and massage rooms.

Gay and bisexual men's bathhouse on East 56th Street in Manhattan with sauna, steam room, lockers and private rooms, open around the clock.

Thermal bath house on the Upper East Side in a 120-year-old building, with a suspended saltwater Flotarium and massages.

Private traditional steam sauna in East Setauket, NY, open daily 6am to 10pm, alongside massage therapy and personal training.

Brooklyn wellness spa on Coney Island Avenue offering an infrared sauna, salt cave, cryotherapy and red light therapy, plus tanning and facials.

Padel club in Cresskill, NJ with an Oasis Spa offering sauna, steam room, cold plunge, hot plunge and a 40 ft mineral pool.

Kove Studio is a wellness center at 268 E 7th St in New York's East Village, listed as offering sauna, plunge and recovery.

Kove Studio is a sauna, plunge and recovery studio at 12 Sheridan Square in the West Village, New York.

Kove Studio is a sauna and recovery studio at 189 N 9th St in Williamsburg, Brooklyn, New York City.

An infrared sauna in Manhasset, listed from Google Maps.

A bathhouse in New York, listed from Google Maps.

A bathhouse in New York, listed from Google Maps.

A Korean spa in Flushing, listed from Google Maps.

An infrared sauna in South Salem, listed from Google Maps.

A Korean spa in Flushing, listed from Google Maps.