It is believed that there has been a fortress on the site since the Gallo-Roman times, though then it was only a wooden watchtower acting as an observation post for the defence of the town of Mandeure (Epomanduodurum).
Mandeure |
The site of Florimont has been occupied since the Roman period, probably by a lookout tower charged with supervising the movement of troops on their way connecting Mandeure in Doubs to Augst and Kembs in Haut-Rhin.
Near the town, a kilometer long (0.6 mile) section of the Augst-Epomanduodurum (now Mandeure) Roman road was discovered.