Casa Fez, located in Porto, Portugal, is a remarkable private residence designed and built by architect Álvaro Leite Siza Vieira. Completed in 2010 after more than a decade of development, the house is both a personal home and a professional studio for the architect. Often referred to by Siza Vieira as “the work of my life,” Casa Fez stands as a deeply personal and experimental project.

The building is defined by its bold geometric composition and a striking white façade, giving it a sculptural and monumental presence. Inside, the minimalist design continues with white wooden floors, carefully controlled natural light, and custom-designed elements, including lighting and furniture. The spatial layout explores contrasts—between openness and privacy, work and leisure, light and shadow—making the house not only a place of living but also a laboratory of architectural thought. Casa Fez exemplifies a balance of classical rigor and romantic freedom, offering a powerful statement in contemporary Portuguese architecture.