|Sio2 arch was founded by Esther Segura, Santiago Ibarra, Xavier Osarte and Lluis Ortega after ten years of fruitful collaboration under the name of F451. In 2014 they relaunched their collaborative practice expanding its cultural profile with a wider and more international scope of work. In Sept 2015, Santiago Ibarra gets elected Ciutat Vella District representative and he leaves SiO2 to work for the city
Sio2 arch explores and develops its practice through all scales and media. Their projects include buildings, installations, landscape, urban design, exhibitions and interior design, curatorial projects, publications, research consultancy and academic and educational projects.