From the end of Antiquity to the early twelfth century, a dozen Benedictine monasteries were founded in the ancient diocese of Tours. Most of these establishments are in a ruined state today, but a diachronic and multi-source approach enables a reconstruction of the monastic topography during medieval times. The first part of this article focuses on the organization of the monastic buildings, which are arranged around the cloister square, and the cloister ambulatories. The second part examines in detail the functional aspects of the monastic buildings, using mainly archaeological and iconographical sources. The analysis of the similarities and differences between settlements provides useful elements to identify previously unknown topographical elements and to highlight modifications carried out during the modern period.