The Scandinavian devotion to the sauna is well documented: this Nordic hot house, devised by UK-based Denizen Works for a family in Finland, has the added appeal of portability.

Made from locally sourced timber and recycled windows, the structure cost less than $6,000 to build; during the winter months, it can be towed out onto the frozen lake aboard a wooden raft. During the warmer months, it sits on the land, perched atop removable concrete blocks. To see additional photos and to read more about the project, go to Dezeen.

Photographs by Tiina Tervo.

Above: The building sits on removable concrete supports.

Above: A narrow window offers a view of the lake beyond.

Above: A sleek glass door adds a note of modernity to the structure.