Spa Castle New York is a sprawling five-floor urban sanctuary in Queens inspired by traditional Asian and European bathing culture. Guests can explore more than a dozen indoor and outdoor hydrotherapy pools equipped with targeted aqua-jets, including a Santorini-inspired outdoor pool area—alongside Sauna Valley's seven distinct therapeutic sauna rooms featuring jade, Himalayan salt, gold pyramid, halotherapy, and infrared experiences. Lounges, a cold plunge, and on-site eateries with a swim-up bar round out a day of immersive wellness.