Hans Hopfer "Castell" sectional sofa for Neue Wiener Werkstätte, dark brown leather, Austria, 1972.
The living room, reimagined as a landscape.
Designed by Hans Hopfer, the Castell sofa dissolves the idea of fixed seating into a modular architecture of comfort. Built from geometric elements with softened edges, each configuration becomes a new composition—expanding, contracting, adapting to the rhythm of the space.
A connoisseur’s counterpart to the celebrated Mah Jong, Castell reflects the same radical vision: furniture not as a finished object, but as an open system. At a time when television and informal living were transforming domestic life, Hopfer proposed a sofa without a prescribed front or hierarchy—one that encouraged conversation, movement and endless reinterpretation.
More than fifty years later, Castell remains remarkably contemporary: a sculptural seating landscape where architecture meets ease.
Height: 28.75 in (73 cm)
Width: 150.4 in (382 cm)
Depth: 104.34 in (265 cm)
Seat Height: 14.97 in (38 cm)
1972
1970-1979
Leather
Lonigo, IT
Our atelier carefully restored and reupholstered the sofa, with attention to structural integrity, materials, and finish. The process was guided by deep respect for its authenticity, balancing technical intervention and historical sensitivity.