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Design story · Architecture
RIMOWA

Otto Kolb Built a Circular House From His Factory's Leftovers

Villa Kolb turns industrial offcuts, excavation stone, rainwater and a patented staircase into one eccentric but practical environmental system.

Quick answer

Villa Kolb was designed by Swiss architect and industrial designer Otto Kolb—not Justus Dahinden or Walter Kolb—and built in Wermatswil near Zurich from 1980 to 1982. Its circular plan reduces exposed corners; metal offcuts from Kolb's staircase factory and stone from the excavation became building material; a central cistern collects roof water for a heating system. It is historically inventive, although no current energy audit supports a modern performance rating.

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Otto Kolb designed the house as his own home after returning from years teaching in Chicago.
The 1980–82 circular structure reused metal factory offcuts and stone excavated on the site.
A central cistern collects rainwater, which the house routes through its fire-grate and heating concept.
RIMOWA commissioned Simon Menges's photographs; it did not design, own or restore the property.
01Corrected history

The house is Otto Kolb's personal manifesto

Kolb returned to Switzerland after teaching design in Chicago and earning commercial success from a modular prefabricated staircase patented in 1965. The stair appears in his own house, but more importantly its production shaped the building: metal left from the factory was folded into a one-off domestic structure.

Built between 1980 and 1982 in Wermatswil in the Zurich Oberland, the villa gathers Kolb's interests in Japanese art, organic architecture and industrial construction. RIMOWA's story refers simply to Kolb, which likely enabled the earlier copy to drift into incorrect first names. The independent architectural record identifies Otto Kolb.

  • Architect and resident: Otto Kolb
  • Location and date: Wermatswil, Zurich canton, 1980–82
02Environmental design

Round form, reused matter and collected water

The cylindrical perimeter has fewer external corners than a comparable rectilinear enclosure, reducing some thermal bridging and surface complexity. Stone from the excavation remained on site, while folded metal offcuts became construction material. At the centre, a large cistern gathers rainwater from the roof.

RIMOWA describes that water moving through the fire-grate to support the heating system, with ponds and floating walkways extending the circulation of water into the landscape. The open plan makes those systems spatially visible rather than hiding sustainability behind equipment labels. It is a total environment, not a catalogue of green products.

  • Reused inputs: factory metal offcuts and excavation stone
  • Water system: roof collection into a central cistern linked to heating
03Critical verdict

Pioneering does not mean high-performing by today's measure

In 1982, combining industrial reuse, rainwater and energy-conscious form in a private house was unusual. Contemporary sustainability assessment would also ask about insulation, airtightness, embodied carbon, system efficiency and measured consumption—data the RIMOWA feature does not provide.

Our verdict: Villa Kolb deserves attention for making environmental thinking inseparable from form and daily life. Describe it as experimental and historically forward-looking, not as certified proof of present-day efficiency. Simon Menges's photographs reveal the system's atmosphere; technical performance remains an open research question.

  • Historical strength: environmental systems are integrated into the architecture
  • Present limit: no published contemporary energy audit or certification

Frequently asked questions

Who designed Villa Kolb near Zurich?
Swiss architect and industrial designer Otto Kolb designed the house as his own residence.
When was Villa Kolb built?
The circular house in Wermatswil was built between 1980 and 1982.
Why is Villa Kolb considered sustainable?
It reused factory and site materials, reduced corners through a circular form and integrated rainwater with its heating concept.
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Return to current RIMOWA designCompare production luggage after Kolb's one-off circular experiment.Read durable-product buying guidesApply material, repair and longevity questions to a real suitcase purchase.How Villa Kolb's authorship was correctedReview the independent sources behind Otto Kolb, the dates and environmental claims.

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RIMOWA visits Villa Kolb opens in a new tabVilla Kolb, architecture by Otto Kolb opens in a new tabOtto Kolb and the Kolb collection opens in a new tab

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