The structures realized by the sculptor Erwin Heerich during his lifetime are works of art whose regularity and form are linked to age-old concepts of building culture. Heerich (1922–2004) understood these buildings that house the Karl-Heinrich Müller Collection on the Museum Island Hombroich as walk-in sculptures. On the path across the island amid a century-old park and renaturated marshy landscape, they form stations of geometrical bodies that enable unique encounters with art, nature, and architecture.Their distinctiveness and backgrounds are vividly presented in this volume with the aid of Heerich’s drawings and sculptures, plans, photographs, and precise descriptions. Encompassing texts derived from conversations with and from project participants, biographies, a glossary, as well as a filmic contribution (DVD) and compositions on the buildings’ basic structures (CD), the publication presents a comprehensive, multifaceted documentation of the sculptor’s oeuvre and its genesis.