With a wall of more than 140 tons of Ytong blocks, Sol LeWitt created a vivid combination of reactive installation and autonomous sculpture for the Kunsthaus Graz in Austria. This catalogue presents photographs and digital drawings of the sculptural project Wall, as well as four accompanying texts that demonstrate how this project relates to the important themes of the artist's work as a whole. LeWitt's sculptural work of the 1960s contributed to a change in our culture's perception of art, and laid the foundation for minimalist and conceptual works.