Mermaid Spa

How do Russians survive the winter? Plenty of steam rooms, dips in ice water and self-flagellation with birch leaves (gratis; a pro will do it for you for an extra $50). And you can find all of that and then some at this Brooklyn joint, which features one circular Jacuzzi, two ice-water tile pools, two Russian banyas, one steam room and one sauna. The soft lighting, rustic-style rooms and herbal-scented air are what makes this spa perfect winter retreat.