<P style="MARGIN: 0in 0in 0pt" class=MsoNormal>Permanent site-specific artworks were erected in the 1970s both in urban sites and in remote desert locations in the southwestern United States, with the support of the Dia Art Foundation. The American desert underwent considerable change and development, gradually becoming home to scientific research centers, military installations, and nuclear testing sites, as well as a hub of artistic activity. The book focuses on the sociopolitical significance of the site-specific art in which this multifunctional space is an essential element. The physical and social context endows the works with added values, turning them into visual signs of an alternative space. The new space they have created may well be dubbed a “differential space,” as defined by Henri Lefebvre. They serve as a form of reparation, whereby the concrete object is used to achieve repression through enchantment.