Book excerpt: Over the last few decades, a rich and increasingly diverse practice has emerged in the art world that invites the public to touch, enter, and experience the work, whether it is in a gallery, on city streets, or in the landscape. Like architecture, many of these temporary artworks aspire to alter viewers' experience of the environment. An installation is usually the end product for an artist, but for architects it can also be a preliminary step in an ongoing design process. Like paper projects designed in the absence of "real" architecture, installations offer architects another way to engage in issues critical to their practice. Direct experimentation with architecture's material and social dimensions engages the public around issues in the built environment that concern them and expands the ways that architecture can participate in and impact people's everyday lives. The first survey of its kind, Installations by Architects features fifty of the most significant projects from the last twenty-five years by today's most exciting architects, including Anderson Anderson, Philip Beesley, Diller + Scofidio, John Hejduk, Dan Hoffman, and Kuth/Ranieri Architects. Projects are grouped in critical areas of discussion under the themes of tectonics, body, nature, memory, and public space. Each project is supplemented by interviews with the project architects and the discussions of critics and theorists situated within a larger intellectual context. There is no doubt that installations will continue to play a critical role in the practice of architecture. Installations by Architects aims to contribute to the role of installations in sharpening our understanding of the built environment.