The Dellys area presents a natural harbour in the form of a small bay sheltered on the west and northwest by the peninsula of Sidi Abdelkader (largely occupied by the town cemetery, along with a small lighthouse). This peninsula is the seaward extension of the mountain of Assouaf, looming over the town. Around this harbour grew the Casbah of Dellys. During the colonial period the town grew southwards, as the port was expanded; a technical school, the "Ecole des arts et métiers", was also built to the north, near the cemetery. Expansion further up the mountain was prevented by the preservation of the Bou-Arbi forest; instead, the town's growth after independence in 1962 was mainly concentrated in two "wings" on each side of it.