The preventive archaeology service of Bourges Plus has designed, with the Latin students of the Collège du Grand Meaulnes de Bourges, a circuit to be carried out on a free visit in the historic center of Bourges, taking the participants to discover ancient sites sometimes unknown. «Our ancestors under our feet» consists of podcasts recorded by the Latin students of the College of Grand Meaulnes dealing with the ancient history of Bourges. Participants will be able to wander around the city according to their wishes and scan the QR codes in each place, from a booklet with a map and the corresponding QR codes.