Rebecca Horn (*1944) is one of today's most outstanding artists. Since the early 1970s her poetic performances, drawings, films, and kinetic sculptures have laid the foundation for the body-related art of today. In 2018 Saint Hedwig's Cathedral in Berlin showed her installation Glowing Core, which quickly became the highlight of the Berlin Art Week. The cathedral opened each day at sunset and remained open until late in the evening, revealing a new universe of light. In this book three photographers and four renowned authors examine this work. Text in English and German.