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[Preface by Editor-in-Chief].

Architectural research has its specific challenges but also opportunities, resulting from the interdisciplinary and varied nature of architecture itself. The journal of Architectural Research in Finland, as well as the yearly organized symposium that it originated from, is an attempt to bring together this variety, inviting us to consider what unites the work done is the three universities in Helsinki, Tampere and Oulu, as well as the international work connected to it. It is not a common set of research questions, common methodology or common literature. The scales and the corresponding architectural tasks are also very different, as this issue of ARF showcases: from urban and regional development to detailed design challenges, from typomorphology to lighting design.