The Saint Omer Tower is located in Thebes, Boeotia, at the northern edge of the Kadmeia hill, the ancient acropolis of the city. Within the courtyard of the Archaeological Museum of Thebes stands this medieval tower, an imposing remnant of the Frankish period, when Thebes served as the capital of the Duchy of Athens. The tower originally comprised at least three storeys, of which only the ground floor and part of the first floor survive today. A restoration and structural consolidation study was carried out with the aim of preserving the monument, making it accessible to visitors, and creating an exhibition space within it. The restoration proposal included the stabilization and consolidation of the structural elements of the tower —masonry, arches, and surviving vaults— as well as the reconstruction of floor structures and frames, and the installation of electromechanical systems. Today, the tower functions as an extension of the permanent exhibition of the Archaeological Museum of Thebes, presenting the history of the Saint Omer family and the diachronic development of the monument.