In his second monograph about architectural remembrance culture, Hauke Horn sets out on a search for traces of the past in medieval church construction. The material, spatial and formal relics, as well as references of the buildings to their histories are collected, systematically arranged and ultimately put into an integrated architectural and historical context for the first time. Using differentiated methods and numerous sacral buildings as examples, the author proves that visual and spatial references to the past are an integral part of medieval building culture. The traces often turn out to be keepsakes, written in stone, which become intelligible through the multilayered, compelling and in part quite surprising research. This book opens up a new approach to understanding medieval church construction.