Soak sits behind Chapel Street in the Alfasi development in South Yarra, designed by Carr Architects. Bathers move between two mineral pools at 34°C and 38°C, dry cedar saunas, a steam room scented with essential oils and a cold plunge held at 12.5°C, all set among leafy planting. It opens from 6:30am daily. Bathing packages start at $39.95, and a private infrared sauna for up to two people is $49.95.