This issue on “Materials” focuses on the new Renzo Piano Pavilion at the Kimbell Art Museum. A series of three articles details and critiques the highly anticipated expansion of one of the most renowned museums of the 20th century. As a continuation of the discussion of the marriage of materials and art, we also feature the 12th Street Studios in Austin — the workspace of a practice born of the marriage between an architect and an artist. A study in the simplicity of materials that make up a ranch in Real County rounds out the discussion.