To the north east of the Bam city, in the skirts of a gigantic rock is the foundations of a fortified castle, reputedly known as the Bam Citadel. This citadel was actually the old city of Bam. The city comprised of four sections and 38 watch towers.
In the southern side of this structure there were four ramparts and to the north-eastern section there was also another colossal rampart.
The citadel has been constructed of sun baked bricks, argyle and straw, but in some parts stone, brick and the barks of date palms have been utilized.
The said citadel comprises of the entrance gate-way, a public sector, a military base and the central section or seat of power.