On the ground floor is a 14th century medieval hall, enhanced by three Romanesque arches supported by small columns. Once the everyday living area of the noble Agoult-Simiane family, it became a carpenter’s workshop in the 19th century. Today, it houses a permanent exhibition providing the visitor with information on the history of the castle and its famous “Rotonde” from the 11th to the 21st century, covering both its periods of splendour and those of neglect, and on to its recent restoration.

You are introduced to one of the most powerful families in Medieval Provence - the Agoult family, together with some artefacts from recent excavations conducted within the Castrum, including cornices, sculpted heads. These are indicative of the architectural quality of the buildings found on the site.