It’s not often that you get to see a truly masterful sauna interior design, but Canadian architectural firm Partisans has created just that. They recently installed a sauna on a private island north of Toronto with smooth and modern wooden panels that look like a modern reinterpretation of a sea cave, or grotto.

The beautiful sauna was pre-fabricated off-site and then brought to the location by boat. The elegant and smooth interior forms the perfect contrast for the sauna’s exterior, which is covered in rough, worn brown planks. The sauna is perched on a rocky outcrop that commands a stunning view of the surrounding bay through a large window.

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