Lacaton & Vassal is a French architectural firm founded by Anne Lacaton and Jean-Philippe Vassal. The practice, based in Montreuil, France, has gained international recognition for its innovative and sustainable approach to architecture. Their work spans a wide range of projects, including residential buildings, cultural institutions, and educational facilities.

One of the firm's notable projects is the "Cité manifeste" in Mulhouse, France, which features 14 single-family houses designed to maximize space and minimize environmental impact. Another notable example is the "Maison, Cap ferret," a house built on a sandy dune in Arcachon Bay, showcasing the firm's ability to integrate architecture with natural landscapes.

Lacaton & Vassal's portfolio also includes larger-scale projects such as the transformation of the Palais de Tokyo in Paris into a site for contemporary creation. Their work often emphasizes the use of simple, cost-effective materials and structures to create versatile and spacious environments.

The firm's approach is characterized by a focus on sustainability, user comfort, and the preservation of natural environments. Their projects often feature open spaces, natural light, and innovative use of materials. With a diverse range of projects across Europe and beyond, Lacaton & Vassal has established itself as a leading architectural practice with a unique and thoughtful approach to design.