SO–IL (SOLID OBJECTIVES IDENBURG LIU) believes in open, thoughtful, and humanistic architecture that creates meaningful cultural and social impact. The studio is dedicated to designing transformative arts and civic projects that enrich communities and the environment.

Founders Florian Idenburg and Jing Liu met in Tokyo in 2001 and formed SO–IL in New York City in 2008 with a vision of a global practice that merges craft and detail-oriented construction with intellectual rigor and a distinct aesthetic. The studio of skilled and committed architects is based in New York and Amsterdam and has cultivated a diverse international portfolio of critically acclaimed projects. Staying true to its founding ideology, SO–IL continues to play a leading role in the wider dialogue of architecture today through building, education, and publishing.

SO–IL is an internationally recognized architecture firm based in New York, featured in The New York Times, CNN, and Frankfurter Allgemeine. Their projects are part of the permanent collections of the Museum of Modern Art, the Guggenheim Museum, and the Art Institute of Chicago. The firm has received numerous awards, including the American Academy of Arts and Letters Architecture Award (2022) and the Architectural Review's New into Old Award (2023). SO–IL has been named United States Artists Fellows, is an Academician of the National Design Academy, and has received the Prix de Rome in the Netherlands and the Prince Bernhard Cultuurfonds Award. The firm is featured in the 2025 Venice Biennale.