Marc Holstein

Competiton won for the Chemin Rouge school and sports campus in Belvaux

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🏆 Competition won!

We are delighted to announce that STDM architects & urban planners, in collaboration with Greisch and AREAL, have won the competition for the Chemin Rouge school and sports campus in Belvaux.

The project stands out for its modular, flexible, and scalable structure, offering the municipality great adaptability over time.
The future campus will bring together: a school, early childhood center, daycare center, administration, sports hall (3 courts), swimming pool, and cafeteria.

We are proud of the trust placed in us by the municipality of Sanem and look forward to continuing the process to bring this ambitious project to fruition.

Translated with DeepL.com (free version)

Valentina Verri at the 10×6 The CX Revolution

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“In a world where every interaction counts, customer experience is becoming the new El Dorado: the theme of 10×6 The CX Revolution highlighted how customer-focused companies are redefining the boundaries of relationships and creativity.”

At the 10×6 “The CX Revolution” event organized by Paperjam+Delano Business Club at Kinepolis Kirchberg, our partner Valentina Verri shared STDM architects and urban planners’ vision of how the architectural profession is evolving in the digital age.

From the drawing board to collaborative BIM models, from virtual reality to artificial intelligence, these tools are transforming the relationship between architect and client—a shift from abstract trust to a shared and immersive experience.

At STDM, we believe that technology is not an end in itself, but a means of strengthening dialogue, transparency, and mutual understanding.

Because at the heart of this revolution, it’s not just about building buildings — it’s about building trust.

Sustainability Award for the Luxembourg Pavilion at the Osaka World Expo 2025

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🎖️ We are delighted to announce that the Luxembourg Pavilion at the Osaka World Expo has been awarded the 2025 Sustainability Award by the Bureau International des Expositions (BIE).

This prestigious distinction recognizes the in-depth consideration given to circularity in construction.
Designed according to the principle of “designed for disassembly,” the pavilion is based on the use of standard construction elements, with a minimum of custom-made parts.
The majority of the components have been designed to be dismantled and reused without modification, so that they can be directly reintegrated into the building cycle, demonstrating the concrete feasibility of reversible and circular architecture.

This award recognizes an exemplary collaboration between institutions, architects, engineers, and designers, driven by a common vision: to design today the buildings of tomorrow, which are simple and reusable. 🌍

Client: GIE Luxembourg@Expo2025Osaka
Architects: STDM + Mikan Gumi
Structure: NEY & Partners
Special techniques: Betic
Scenography: jangled nerves
Circular strategy: +IMPAKT

🎉 Inauguration of the new “Bei der Gemeng” daycare center in Bertrange!

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✨ On September 19, 2025, the new “Bei der Gemeng” daycare center in Bertrange was inaugurated in the presence of Minister of Education Claude Meisch.
This modern facility can now accommodate up to 480 children in a warm and functional setting.

The building, equipped with a production kitchen, specialized activity rooms, a large outdoor area, and slides connecting the three floors, was designed to provide a high-quality environment for both children and educational staff.

This project is part of the redevelopment of the Bertrange center, following on from the “Shared Space,” the new school Beim Schlass, and the Niki Bettendorf sports center

The ‘Maison pour Tous’ in Elmen has been inaugurated!

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With 1,300 m² dedicated to community life, the building accommodates:
– The Elmen Brasserie
– The Dadofonic Room for theater, shows, and events
– The Neighborhood Room for residents
– Meeting rooms for local associations
A sustainable and functional architectural project, designed to provide Elmen with a place for meetings, activities, and socializing.
A STDM project for SNHBM, in the heart of the new village.

The JFK project in Kirchberg has reached a new milestone!

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Following the earthworks phase, the construction of the large Berlin wall, and the start of the basement work, the first mock-up has been assembled, marking the continuation of the project.

📍 Located on Avenue John F. Kennedy, this residential project led by SNHBM – Société Nationale des Habitations à Bon Marché S.A. will comprise eight buildings for around 400 residents.

This is a key milestone in this large-scale project, reflecting the urban development of the Kirchberg plateau.

📣 STDM opens its doors to you at the ‘Journées Portes Ouvertes de l’architecture’

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✨ Step behind the curtains of our architecture ✨

For the ‘Journées Portes Ouvertes de l’architecture’, we invite you to explore our studio and discover the ideas and values that shape our projects.

On the agenda:

  • An immersion in four iconic projects
  • A behind-the-scenes look at our project designed for the Osaka World Expo- Exclusive
  • Discussions with our architects over a drink

📅 September 23, 2025, 11 a.m., 2 p.m., and 5 p.m.

📍 39 Rue de Bonnevoie, L-1260 LUXEMBOURG

Come discover the STDM studio, where ideas take shape and architecture is invented.

Registration required: https://form.jotform.com/252154344056351

🌟 Happy New Year from STDM ! 🌟

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As we step into 2025, we want to take a moment to thank our clients, partners, and collaborators for their trust and support throughout the past year. Together, we’ve built more than just buildings – we’ve created spaces that inspire and transform.
Here’s to a new year filled with exciting projects, innovative designs, and continued growth. We look forward to shaping the future of architecture together.

Wishing you all a prosperous, creative, and successful year ahead! 🎉

🎄✨ Celebrations and conviviality to round off the year! ✨🎄

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The team celebrated the end of the year in style with a memorable evening: presenting the STDM awards, celebrating years of commitment and the year’s highlights, all in good spirits! 🏆

The next day, we strengthened our ties during a unique team-building day at the brasserie nationale 🍻: between an introduction to brewing our own beer and a tour of the brewery, team spirit was the order of the day!

🎉 The workshop will be closed between Christmas and New Year. We wish you all happy holidays and look forward to seeing you in 2025 for some exciting new projects!

Inauguration of the Millbaach project

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On the 21st of November, the official inauguration of the Millbaach project took place in Altwies, in the presence of Housing Minister Claude Meisch, Mayor Steve Reckel, and Aldermen Claude Schommer and Tessy Altmann.

Designed by STDM for the Administration of the municipality of Mondorf-les-Bains, Millbaach offers affordable and transitional housing for young people and families, while respecting the environmental constraints of the site. Set between historic villas and the banks of the River Gander, the project combines urban harmony with ecological preservation.

The four single-family homes offer generous, light-filled spaces that open onto nature, while the residential building maximises solar gain thanks to an alternating geometry and balconies that project into the landscape. The project also stands out for its sustainable design, which combines traditional materials with contemporary aesthetics, optimizing light and solar gains while respecting the environment.

The steel structure of the Luxembourg pavilion for Expo 2025 Osaka is now complete!

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On site, our teams, STDM, MIKAN GUMI and Jangled Nerves, are supervising the progress of the work and ensuring coordination between the general contractor and the two specialist companies responsible for the scenography. This collaborative work is essential to realise the project’s vision and ensure that each stage is carried out to the established technical, environmental and aesthetic standards. It’s a great team effort that’s progressing apace and on schedule! 👏

STDM at the 10th Business Run Edition

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🏃‍♂️🏃‍♀️ STDM at the Business Run! Our teams took part: well done to Marc Holstein, Damien Balon and Marine Fradin (pacelift) and Gilles Muller, Louise Bastin and Xavier Claire who won the ‘most creative team name’ under their banner: stra_va bien?
A chance to consolidate team spirit and creativity through sport and celebration! 🎉And to surpass themselves while strengthening their bonds 💪

Urban Sketch at Apéri’tours

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During the Apéri’tours organized by Ville de Luxembourg, STDM and its architects Arnaud De Meyer and Thomas Untereiner introduced the urban sketch. More than a drawing, it captures the essence of neighbourhoods by taking the time to observe and rediscover every detail.

Open to all, it’s an opportunity to bring amateurs and enthusiasts together around our urban environment.

👉More info: https://www.vdl.lu/fr/la-ville/participez-vous-aussi/lannee-des-24-quartiers/aperitours 👈

Pics report of our traditional site visit

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This tradition is dear to us, as it allows all our team members to share, exchange ideas, and stay informed about the latest developments.

On Friday, 12/07, we had the opportunity to explore some of our recent projects:

  • SGI office building in Junglinster
  • Härebierg Military center in Diekirch
  • TWIST multifunctional complex in Belval
  • Sports center and education and care service in Bertrange

A huge thank you to our clients for their warm welcome!