Icosium was a Berber city that was part of Numidia which became an important Roman colony and an early medieval bishopric in the casbah area of actual Algiers.
Lambaesis, Lambaisis or Lambaesa, is a Roman archaeological site in Algeria, 11 km southeast of Batna and 27 km west of Timgad, located next to the modern village of Tazoult.