Ala citadel 9 km southeast of Semnan and roadside air base is located in the Ala and one of the monuments mid-qajar is considered that the historical record is reached. An area of about 100 meters and the infrastructure of around 120 meters. A height of about 4.5 meters, with the addition of a second storey to about 8 meters.
Citadel building in the form of hexagonal structure is built on two floors that was apparently the local government. Materials used in the mud and thatch on top of it lined with decorated plaster screed. Building on a smaller scale the same building is eight Beheshti.