Abstract
This general introduction to the political semantics of places of power in the Middle Ages takes the form of an interrogation of the " mise en beauté " of Jean de Berry's power in the first decade of the XVthcentury through the representation of his castles in the Très Riches Heures of the Duke of Berry, and in particular that of Mehun-sur-Yèvre, which features in the depiction of the " Temptationof Christ ". Attentive both to the devotional nature of the contemplation of the Hours (since here, the main locus of power is the book itself), but also to the details of the painted work, which, revealing the possibility of a tipping point in the excess of wealth and the excess of an aspiration to beauty, we support a more dramatic interpretation of the work, linked to the melancholy of power and the experience of aging. Between locus and iter, the rootedness of lordly domination and the heterotopia of imaginative powers, this is also an opportunity to define the various concepts of spatiality that will be brought into play throughout the lecture, the spatial turn specific to medieval history being put to the test here by a more general reflection on the relationship between place and event.