Unknown Architects is a young and ambitious architecture office founded by Daan Vulkers and Keimpke Zigterman in 2012. We are constantly challenging ourselves to create great spaces with our clients. Clear and consistent interventions allow us to create frameworks for life, free for interpretations.

Since 2012, built works include a Décor for the Canja Ensemble in Muziekgebouw aan ‘t IJ, a Garden Studio and The Fragrance Store in Amsterdam and Pied-à-terre in Leiden, which has been widely published. In 2016, our work was exhibited in the exhibition ‘Maatwerk / Massarbeit, architecture from Flanders and the Netherlands’ in the Deutsches Architektur Museum and subsequently travelled to the MHKA in Antwerp. Currently we’re working on the refurbishment of a corner house in Leiden, roof extension in Watergraafsmeer Amsterdam, rear extension in Schiedam and refurbishment of Club Basis in Utrecht. Besides our work in practice, we teach a MSc1 design studio at Delft University of Technology.

Daan Vulkers

Daan Vulkers MSc ARB graduated with honours in architecture at Delft University of Technology in 2015 and completed the Royal Institute of British Architects Part 3 at Kingston University with merit. His graduation project was nominated for the RIBA President’s Medal 2015 and Archiprix Netherlands 2016.

Together with Keimpke Zigterman, he has founded Unknown Architects in 2012 and previously gained experience working for Office of Metropolitan Architecture (OMA), on the prize winning competition for cultural centre The Factory in Manchester, and at Van Dongen-Koschuch on the winning competition entry for the Musis Sacrum in Arnhem. At David Chipperfield Architects in London he worked on the Royal Academy of Arts Masterplan. He currently teaches a MSc1 design studio at Delft University of Technology.

Curriculum vitae

Keimpke Zigterman

Keimpke Zigterman MSc, originally a trained professional cellist at The Royal Conservatory of The Hague and the Conservatory of Amsterdam graduated cum laude in architecture at the Technical University Delft in 2016.

He has founded Unknown Architects together with Daan Vulkers in 2012. Keimpke gained valuable experience working on private houses for BaksvanWengerden Architecten in Amsterdam (now Space Encounters), collaborating on large public and infrastructural projects for Sanal Architecture and Urbanism in Istanbul and working on restorations and refurbishments of listed monuments for Korteknie Stuhlmacher Architecten in Rotterdam. He currently teaches a MSc1 design studio at Delft Technical University.

Curriculum vitae


Matteo Andrenelli, Yiming Yang





Canja Ensemble,  Club Basis,  DoorZigt BV,  Linhart’s Foundation,  Muziekgebouw aan’t IJ,  The Fragrance Store,  Hello Wood


Photography by Raoul Kramer and Max Hart Nibbrig
Website designed and built by D.E. van Ruiten

© 2017 Unknown Architects. All rights reserved.