Self-sustaining cabins on tiny Finnish island are heated by a sauna stove

Finnish designers Aleksi Hautamaki and Milla Selkimaki have built a self-sufficient summer house on the five-acre island they own on the edge of Finland's Archipelago National Park.
Called Project Ö, after the Swedish word for island, two cabins on the site house living spaces and bedrooms, as well as a workshop and sauna.In order to be completely self-sufficient, the cabins source their energy from roof-mounted solar panels, and use filtered sea water for drainage, sinks and toilets.
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