Marking the 100th anniversary of Antoni Gaudí’s death, an exhibition focusing on the architect’s windows is being held concurrently in Barcelona, at the World Heritage Site Palau Güell, and at 21_21 DESIGN SIGHT Gallery 3. The Tokyo exhibition is presented in a distinctive layout that takes full advantage of the gallery’s spatial characteristics. It showcases insights, findings, scale models, and other results drawn from research on Gaudí’s windows conducted by scholars together with window manufacturer YKK AP over numerous years. Alongside the exhibition, this information is also being shared in the form of documentary footage, books, and related events.