Alla moderna fortified system

The space comprises three levels that are connected to the central gate by a transfer ramp: the lower level, a 12-metre-high barrel vaulted underground space that is perfectly ventilated and illuminated thanks to a double row of openings; the middle level is an entrance vestibule enabling insight into the arrangement of the structure. Finally, there is a terrace with large openings facing in different directions, with its central part where a chapel and then barracks were built. A watchtower was located on the eastern battlement, while some walled storage tanks were situated in the southern sector.