The Art or Architecture Biennale events transform the Giardini area in Venice into a vibrant hub of activity, brimming with visitors and creative energy.
However, once these major events conclude, the Giardini enter a quieter yet equally dynamic phase. In the months and weeks leading up to the next Biennale, artists, architects, and technical teams engage in a different kind of work, surveying spaces, conceptualizing installations, and initiating transformative interventions to prepare the pavilions for their new exhibitions.
Such is the case with the Danish Pavilion, which is undergoing preparations for the 19th International Architecture Exhibition, set to open on 10th May 2025.
The overarching theme of the Biennale Architettura 2025, curated by Italian architect and engineer Carlo Ratti, is "Intelligens. Natural. Artificial. Collective". The title of the event is condensed into a single term, "intelligens," combining "intelligence" with the Latin "gens" (people), suggesting an interpretation of intelligence that embraces inclusivity, multiplicity, and imagination, far beyond today's AI-centric discourse.
Responding to this theme, the Danish Pavilion, curated by architect Søren Pihlmann, founder of the Copenhagen-based office Pihlmann architects, presents the exhibition "Build of Site." This work-in-progress installation critically examines how rethinking and repurposing existing structures and resources can address some of architecture's most pressing challenges.
By framing architecture as both a discipline and a practice capable of adapting to a sustainable future, the exhibition advocates for innovative strategies that prioritize resource efficiency, environmental sensitivity, and the reimagining of built environments.
The Danish Pavilion at the Giardini in Venice is a historic architectural complex comprising Carl Brummer's 1932 building and Peter Koch's 1958 extension.
Søren Pihlmann is currently transforming the pavilion into a 1:1 experimental site, collaborating with leading experts from the Royal Danish Academy, the University of Copenhagen, the Technical University of Denmark, and ETH Zurich.
By adopting hyper-local strategies for reclaiming materials, Pihlmann and his team aim to redefine architectural practices through hands-on maintenance and material reuse directly within the pavilion itself.
In these months of preparation heading towards the Biennale, Pihlmann has conducted a comprehensive study of the Danish Pavilion to increase the usability of materials already present in the building and combine them with bio-based binders. The result is a living demonstration of sustainable design principles that could serve as a replicable model for buildings globally.
Pihlmann's methodology is exemplified by his recent project, Thoravej 29, a transformation of a former Copenhagen-based factory from the '60s into an open community hub.
Awarded the title of Denmark's Building of the Year 2024, the project achieved an impressive 95% reuse of the existing materials, showcasing the viability and aesthetic potential of resource-efficient architecture. At Thoravej 29 each layer of the structure, even those traditionally deemed insignificant, was indeed viewed as an asset. Much of the existing material was retained and repurposed according to its inherent qualities to meet the needs of the project.
This is not the first time national pavilions or installations in Venice have embraced material reuse and recycling. At the 18th International Architecture Exhibition, the U.S. Pavilion highlighted the role of plastic in our lives, showcasing a series of recycled projects. During the same event The German Pavilion served instead as a warehouse of leftover materials from the 2022 Art Biennale, catalogued and repurposed with assistance from Rebiennale/R3B, a local platform dedicated to reducing waste and facilitating installation processes.
Recycling also inspired the 2016 Architecture Biennale installations dubbed "Maria Reiche's Room" at the Giardini and Arsenale, where 100 tons of waste materials from the 2015 Art Biennale, including 10,000 m² of plasterboard and 14 km of steel studs, were creatively reassembled, offering visitors a powerful lesson in sustainability and lateral thinking.
In previous exhibitions, visitors were encouraged to reflect on the hidden value of materials, and the Danish Pavilion will carry this dialogue forward.
Central to this year's Biennale is the provocative question: will we ever be able to design a building as smart as a tree? This query underscores the urgency of reducing atmospheric emissions and addresses architecture’s significant role in the degradation of our planet. As the climate crisis intensifies, we must ask if architecture can lead with substantial, non-cosmetic solutions that are both effective and immediate.
The Danish Pavilion will attempt to provide us with an answer from a technical perspective and visitors will gain rare access to the creative and technical knowledge typically hidden behind the scenes, as the pavilion itself becomes both subject and site for renovation.
The pavilion's architectural philosophy fundamentally challenges conventional construction by prioritizing the resources already at hand, a perspective that transcends architecture to influence fields such as art, engineering, biology, data science, social and political sciences, and even fashion.
As Søren Pihlmann aptly states, "We've already created everything we need. That's why we must become better at understanding and finding value in what already exists."
Image credits for this post
1 and 2. Carl Brummer (1864-1953) architect, The Royal Library - The Art Library
3, 4, 5, 6 and 7. Work in progress at The Danish Pavilion, The 19th International Architecture Exhibition - La Biennale di Venezia, Venice. Credit: Hampus Berndtson
8, 9 and 10. Work in progress at The Danish Pavilion, The 19th International Architecture Exhibition - La Biennale di Venezia, Venice. Credit: Pihlmann Architects