AR May 2025: Circularity

Rome’s Testaccio Monte dei Crocci seen in a print. The hill is made from waste ceramic pots.

Pihlmann Architects | H Arquitectes | Marcel Raymaekers | Urko Sánchez Architects | BC Architects | Assemble | Atelier Luma | Laurie Baker | Bovenbouw | Baubüro In Situ | Jiakun Architects

Globally, we currently manufacture our own weight in new things every week, of which only about 1 per cent is estimated to still be in use six months after purchase. This wreaks devastation on cities and communities in the global south, to which the waste generated by the north is shipped.

This issue identifies circular practices at different scales. In Mallorca, H Arquitectes have turned sandstone from an existing building into nougat-like blocks while in the south of France, rice straw and sunflower stems are used to make new building materials. Whole components are integrated into fantastical concoctions in the work of Marcel Raymaekers and transplanted across borders to relieve housing shortages in Ukraine. Entire buildings are also reused, often repurposing materials and components: Pihlmann Architects reused 95 per cent of the existing materials on site in their fit-out of a 1960s office block in Copenhagen, while disused steelworks are becoming a public park in Hangzhou.

But circular design principles fit awkwardly into linear capitalist production processes. As Michaël Ghyoot and Tom Schoonjans write in this issue’s keynote, ‘The current capitalist configuration simply does not tolerate curbing exploitation.’ Recycling can even help justify business-as-usual; with salvaged bricks thrown in, or recycled plastic, waste is presented as an opportunity for ‘sustainable growth’. Circular practices should instead be coupled with degrowth, encouraging a reduction of waste and the use of bio-based construction materials.

1521: Circularity

Cover image of The Architectural Review May 2025 Issue on Circularity depicts a wall in China constructed from reused materials including bottles and a ceiling fan

cover (above) Zhoushan Community Architecture Team
At the Community Educational Base in Zhoushan Village, China, residents have created an ‘eco-wall’ of spoliated flotsam and jetsam, including old tiles, signs, pots, pans and a ceiling fan. Credit: Kuo Jze Yi of Zhoushan Community Architecture Team

folio (lead image)
Now part of a buzzing neighbourhood in Rome, Monte Testaccio is an artificial hill comprised mostly of testae, or broken terracotta fragments, accumulated through the consumption of olive oil. The mound is an emblem of the entanglements between urbanity and waste. Credit: Wikimedia

keynote
Break the cycle
Tom Schoonjans and Michaël Ghyoot

building
Thoravej 29 by Pihlmann Architects in Copenhagen, Denmark
Morten Birk Jørgensen

essay
Salvaging for Ukraine
Adam Przywara

building
Housing for people over 65 by H Arquitectes in Palma de Mallorca, Spain
Eleanor Beaumont

reputations
Marcel Raymaekers
James Westcott, Lionel Devlieger, Arne Vande Capelle, Stijn Colonand Aude-Line Dulière

building
Waldorf school campus by Urko Sánchez Architects in Nairobi, Kenya
Peter Muiruri

outrage
Plastic (not) fantastic
Martin Weiner

building
Le Magasin Électrique by Assemble, BC Architects & Studies and Atelier Luma in Arles, France
Manon Mollard

revisit
Laurie Baker Centre in Kerala, India
Rajshree Rajmohan

building
Kielsbroek recycling centre by Bovenbouw Architectuur in Antwerp, Belgium
Christophe Van Gerrewey

building
Transa repair workshop by Baubüro In Situ in Zürich, Switzerland
Kristina Rapacki

building
Grand Canal Steelworks Park by Jiakun Architects and TLS Landscape Architecture in Hangzhou, China
Jacob Dreyer

city portrait
Waste streams across Lagos
Olorunfemi Adewuyi

AR May 2025

Circularity

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