Glass House Stone House
Portugal
The rebuilding of a granite farmhouse ruin in Portugal's north, near the Atlantic, running since 2021 and still under way. Of the seven original rooms, three become enclosed, warm spaces and four stay open to the sky as outdoor rooms; the granite walls stand straight on the earth, laid dry without mortar. Instead of wrapping the old stone in insulation and membranes, copper pipes buried in the walls warm the stone itself through the cold months, keeping the damp out and heating the rooms by radiance.
The glass building in the picture is the finished half so far: a low glass volume sunk about a metre into the ground on a concrete basin, its panes braced by a light metal frame, built to hold plants and to stand as the stone house's counterpart. The pair comes to 205 square metres, with landscape work by Pomo Landscape.
Dyvik Kahlen Architects
Founded in London in 2010 by Christopher Dyvik and Max Kahlen, the practice now works from Porto and Palma on everything from urban plans and housing to exhibitions and furniture. Both founders have taught at the Royal College of Art in London.
Architecture Dyvik Kahlen Architecten (@dyvikkahlen). Photography Francisco Ascensão (@francisco.ascensao). Seen via @visual_gluttony.
The picture comes from this post on Instagram.
Researched August 2026. I credit each piece as carefully as I can; if you know more about this one, message me on Instagram.