The 50,000-square-foot, high-design super spa in Brooklyn’s Midwood neighborhood offers a circuit of rejuvenating bathing rituals from around the globe. Guests glide from the Turkish and Moroccan tiled hammams to a Himalayan salt room, Finnish saunas, Japanese onsen pools, Eastern European banyas, saltwater swimming pools and the Jacuzzi. Beginning May 6, the spa will offer four different types of IV therapies.