All-black sauna embedded in Stockholm's rocky island frames sea views

Architect Matteo Foresti has designed a sauna set into the rocks of and island within the Stockholm archipelago that's lined with dark oak and black stone.
Located in the Värmdö municipality, Sauna R has been dug into a shallow slope, accessed via a thin path that winds through the rocky surroundings dotted with cabins.The simple box faces northwards towards the sea.
A full-height, sliding glass door provides views out over the water, which can be enjoyed from a monolithic st