DS-1025/09 Terrazza

Designed in 1973 by Swiss architect Ubald Klug for de Sede, the Terrazza (DS-1025) was conceived as a landscape rather than a sofa — a stepped, terraced form inspired by the alpine valleys of Klug's native Switzerland. Trained in Zürich and Paris under Jean Prouvé, Klug brought an architectural rigour to upholstery: each module reads as a section of mountainside, the leather pulled taut over foam to articulate the strata of the slope.

Hand-upholstered in the de Sede workshops in Klingnau, the Terrazza came to define the dialogue between Swiss craftsmanship and the conversation-pit aesthetic of the 1970s. It is held in the permanent collection of the Vitra Design Museum (Weil am Rhein) and remains one of the most coveted modular sofas of the era.