Qalʿat ibn Salama (Arabic: links=no|قلعة ابن سلامة) is an ancient fortress and archeological site near Tiaret, Algeria. This place is known for having sheltered Ibn Khaldun,[1] an Arab scholar and historian, for four years, between 1375 and 1379. It was here at Qalʿat ibn Salama that he wrote his Muqaddimah (known as Prolegomenon in Greek).[2]
This fortress is situated on a mountain top nearby Taoughzout at about three miles south of Frenda in the wilaya of Tiaret.
The fortress is in a region with a hot desert climate (Köppen climate classification BWh), with very hot summers and mild winters. Rainfall is light and sporadic, and summers are particularly dry.