Algeria–Holy See relations
Although Islam is the state religion of Algeria, the Holy See has maintained a comparatively good relationship with the Algerian authorities, with Léon-Étienne Duval being famously recognized as the "bishop of Muslims" after the departure of French colonists.
Architecture of Algeria
Islam reached Algeria in the 7th century via the Arab conquest of Northern Africa. Islamic conquest brought many of the hallmark features of Muslim cities to Algeria, including the souq as a commercial center, hammam as a social center, and the mosque and accompanying madrasah as a religious center. The casbah, or fortified citadel, was also introduced to Algeria during this era.