Iglusauna
It's well known that saunas can be great for one's health, but most of them are either box- or barrel-shaped. The Iglusauna derives its name from an igloo, using its curved shape to gather the steam at the ceiling and let it slowly drift downwards. It comes in multiple sizes — single, double, triple, or panoramic — can be equipped with wood-fired and electrical stoves and is offered in a range of exterior colors and interior finishes.