Find a great Korean spa in NYC

What is it? Super high-tech and sparkling-clean, this three-level spa, which opened in 2007, seems like an unlikely fit for 33rd Street. 
Why we love it: Buried in Koreatown, the 12,000-square-foot traditional Asian-style spa houses four igloolike saunas (the Hwangto Dry Grotto, Crystal & Jade Dry Grotto, Crystal & Jade Steam Grotto and Stone Ice Grotto), which contain minerals and salts for bettering your skin.
Time Out Tip: Along with private treatment rooms for massages, scrubs and the like, Aura also has holistic offerings like acupuncture and aqua therap, if you're feeling adventurous. 

What is it? This expansive wonderland in College Point, Queens, has taken on near legendary status in NYC, partly for its quirky layout and partly because it attracts a diverse following, with frat boys and families among the patrons.
Why we love it: Inside, there are seven themed saunas; one might have healing minerals in it, while another may feature colored lighting (you select the therapeutic illumination yourself).
Time Out Tip: On its first floor are separate nude bathing and showering areas for men and women. To meander through the rest of the complex, you'll don special "uniforms" (pink tees and orange shorts for ladies, gray shirts and blue bottoms for gents). On the second and third floors, you'll find a coed, year-round outdoor water park (bathing suits compulsory) with all manner of heated jets, whirlpools and showers. 

What is it? Okay, so technically this spot isn't in NYC proper, but to experience the country's largest and most accommodating Korean Spa, it's worth the quick jaunt to Jersey.
Why we love it: It's unlikely that you'll even cover the whopping eight floors of treatments that this relaxation arena offers, including nine pools, seven sauna rooms, a restaurant and adjoining hotel. But we dare you to try. Among the highlights at this full-service facility are the spectacular rooftop infinity pool, which offers an untouchable view of the NYC skyline; a volcanic sand treatment using rare lava sand imported from Japan; and a scorching charcoal sauna.
Time Out Tip: In summer months, the outdoor pools easily beat the sardine baths of the city, and the indoor saunas will reinvigorate you no matter how brutal the winter gets.

What is it? An unassuming Koreatown building is home to this huge, soundproof, round-the-clock oasis.
Why we love it: The facilities are impressive—lolling in one of the igloo-like saunas, made from 20 tons of jade stones and infused with Chinese herbs, is said to increase metabolism, improve circulation and detox the body. Standard spa treatments like facials; massages and body wraps are offered, too.
Time Out Tip: Shy gals take note: Nudity is encouraged in the communal areas, full-body scrubs are executed in shared, barely screened-off spaces, and the spa goes unisex after 5pm. (Note: the fifth floor is ladies only before 5pm, though the fourth floor is unisex 24/7; bathing suits are required in all unisex spaces.) 

What is it? More and more people are flocking to this no-nonsense Flushing bathhouse, also known as Jjim-jihl-bhang, to avoid the chaos that Spa Castle can be
Why we love it: The Flushing establishment offers the same amenities as the aforementioned spa, but on a smaller scale and with a truly authentic experience.
Time Out Tip: One highly admirable feature is its second-floor dining hall, which offers traditional Korean meals and adds to the spa’s authentic appeal.

What is it? An unassuming but attentive wellness sanctuary tucked on a quiet street in northern Tribeca
Why we love it: The one-hour treatment here uses a Korean exfoliation technique that scrubs and massages almost every inch of your body clean after a visit to the steam room. A seaweed detox, hair shampoo and conditioning, and a cucumber eye treatment are included, meaning you’re leaving the place practically a whole new person.
Time Out Tip: The specialists here have strong hands—ask your technician to start with mild pressure and work from there.