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<div class="logo"><a href="en/home.php"><img alt="best architects" src="lib/global/logo_25.png"></a></div></header><main><section class="winner"><!--<?php $filter->echoPrevNext(); ?>--><ba-slideshow class="slideshow full"><figure class="full first type-fill" style="--slide-color: #ffffff" data-color="#ffffff"><picture><source type="image/webp" srcset="lib/Gewinner/2025/UR/R9009_k.jpg.tf800x600-80x48.webp 800w, lib/Gewinner/2025/UR/R9009_k.jpg.tf1200x900-80x48.webp 1200w, lib/Gewinner/2025/UR/R9009_k.jpg.tf1600x1200-80x48.webp 1600w, lib/Gewinner/2025/UR/R9009_k.jpg.tf1900x1425-80x48.webp 1900w, lib/Gewinner/2025/UR/R9009_k.jpg.tf2000x1200-80x48.webp 2000w, lib/Gewinner/2025/UR/R9009_k.jpg.tf2375x1425-80x48.webp 2375w"></source><source type="image/jpeg" srcset="lib/Gewinner/2025/UR/R9009_k.jpg.tf800x600-80x48.jpg 800w, lib/Gewinner/2025/UR/R9009_k.jpg.tf1200x900-80x48.jpg 1200w, lib/Gewinner/2025/UR/R9009_k.jpg.tf1600x1200-80x48.jpg 1600w, lib/Gewinner/2025/UR/R9009_k.jpg.tf1900x1425-80x48.jpg 1900w, lib/Gewinner/2025/UR/R9009_k.jpg.tf2000x1200-80x48.jpg 2000w, lib/Gewinner/2025/UR/R9009_k.jpg.tf2375x1425-80x48.jpg 2375w"></source><img src="lib/Gewinner/2025/UR/R9009_k.jpg.tf800x600-80x48.jpg" alt="Mentha Walther Architekten: Wasserwerkstrasse schoolhouse - best architects 25" sizes="100vw" style="object-position: 80% 48%" title="© Mentha Walther Architekten · Photo Beat Bühler"></picture></figure></ba-slideshow><hgroup><h1>Mentha Walther Architekten</h1>
<h2>Wasserwerkstrasse schoolhouse</h2></hgroup><div class="details">
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<h3>best architects 25</h3>
<p>renovation and addition</p>
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<h3>Place</h3>
<p>Zurich, Switzerland</p>
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<h3>Studio</h3>
<p><a href="http://www.menthawalther.ch" target="_blank">www.menthawalther.ch</a></p>
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<div class="detail">
<h3>Photos</h3>
<p>Beat Bühler</p>
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</div>
<div class="description">
<h3>Description</h3>
<p>The three-storey building on the banks of the Limmat was built in 1783 as the first large factory outside the city walls of Zurich and is now a listed building. The building was to be converted, redesigned and renovated. The valuable building fabric has been handled with care, taking into account the total refurbishment planned from 2030. The interventions were carefully chosen, and the modernisation of the building’s technical systems was carried out in such a way as to guarantee its operation for the next 10 years. The largest measures were carried out in the basement, where a new multi-purpose and catering hall, a catering kitchen, and new cloakrooms and WC facilities were installed. Structural changes were made in the centre of the building, where various interventions from the 1970s and 1980s were removed to create a spacious, open access zone. A lift was installed to simplify operational processes and provide wheelchair access to the floors. Apart from the renovation of the sanitary facilities, the ground floor remained largely untouched. On the upper floor, extensive demolition and remodelling work was carried out to provide three classrooms for the school and to ensure fire safety. The interplay of existing and new elements has resulted in a respectful and appropriate upgrade. The building impresses with its targeted use of resources in the area of tension between preserving what is historically valuable, upgrading what exists and creating something new.<br></p>
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