The Historic Casbah of Algiers: A Living UNESCO Medina Undergoing Restoration

Perched high above Algiers Bay, the Casbah – known officially as “Kasbah” by UNESCO, yet commonly referred to as “Casbah” in English, and القصبة in Arabic – presents a captivating maze of whitewashed houses, stepped lanes, and covered passages climbing the hillside. It stands as the historic heart of Algiers, a city built upon layers of Punic, Roman, and medieval Amazigh civilizations, before being significantly transformed during the Ottoman period into the urban fabric largely recognized today.

The UNESCO World Heritage Centre recognizes the Kasbah as a unique Maghrebi urban ensemble. It comprises the remnants of a citadel, ancient mosques, Ottoman palaces, and a traditional urban structure that still fosters a profound sense of community. The site was inscribed on the World Heritage List in 1992 under criteria (ii) and (v), acknowledging its significant architectural influence and its enduring value as a traditional human settlement.

Beyond its architectural significance, the Casbah holds immense historical weight. It served as the political seat of Ottoman Algiers, was substantially reshaped by French colonial demolitions and new street construction, and became a pivotal urban battleground during the Algerian War of Independence. Since 1962, it has maintained its symbolic centrality in Algeria’s national memory, even as its physical infrastructure has become increasingly fragile. Currently, it represents one of Algeria’s most prominent heritage revival initiatives, with restoration and infrastructure projects progressing with noticeable, albeit sometimes uneven, momentum since 2023.

From Icosium to the Ottoman City

The human history of the Casbah’s site is ancient. UNESCO records occupation dating back to at least a Carthaginian trading post in the fourth century BC. The medina’s contemporary urban layout is largely attributed to the Zirid period in the tenth century. While English-language sources sometimes cite 944 for its founding, and French-language histories frequently mention 960 in connection with Bologhin ibn Ziri’s rebuilding of Algiers, it is most accurately understood that the Casbah evolved from a mid-tenth-century Zirid refoundation of Algiers, built upon the ruins of ancient Icosium.

Nevertheless, it was the Ottoman period that profoundly shaped the Casbah’s distinctive character. From the sixteenth century onwards, Ottoman Algiers flourished as a fortified city, blending Ottoman military engineering with traditional Maghrebi and Mediterranean domestic architecture. This included homes designed around courtyards, terraces, and inward-facing layouts. The district’s renowned winding lanes were a direct result of the steep natural slope descending towards the sea. By the zenith of the Ottoman era, the Casbah operated as a largely self-contained urban system, encompassing housing, military installations, mills, bakeries, hammams, markets, religious schools, and mosques, all presided over by the royal citadel complex.

The French conquest in 1830 did not merely introduce colonial structures around the periphery of the old city; it fundamentally reshaped the Casbah itself. Research indicates that between 1833 and 1859, new street openings, expropriation regulations, and plot remodelling dramatically fragmented the precolonial urban fabric. This intervention resulted in hybrid domestic forms in the lower Casbah, rather than a clear segregation into distinct “European” and “indigenous” quarters. From a conservation perspective, the International Council on Monuments and Sites (ICOMOS) explicitly attributed this colonial-era destruction partly to a European misunderstanding of Arab urban life and partly to the settlers’ desire to replicate familiar habits and urban patterns.

A Theatre of Memory

The Casbah’s pivotal role in the Algerian War of Independence is fundamental to its contemporary understanding. During the intense Battle of Algiers, sections of the old medina became vital to the urban networks of the FLN (National Liberation Front) and central to French counter-insurgency operations. This history imbues the district with a significance far transcending its physical architecture: it is revered not only as an ancient city but also as one of the symbolic landscapes of anti-colonial resistance.

The building now known as the Ali la Pointe Museum commemorates the site where Ali la Pointe, Hassiba Ben Bouali, Little Omar, and Mahmoud Bouhamidi tragically lost their lives on October 8, 1957, establishing it as one of the most emotionally resonant historical sites of the Battle of Algiers. In Algerian commemorative discourse, these individuals are honored as martyrs of the independence struggle. For international audiences, it is important to note that this framing reflects Algeria’s national memory of the war, whereas French and Anglophone narratives often describe these events using terms related to urban warfare, insurgency, and counter-insurgency.

Following independence in 1962, the Casbah did not recover its previous administrative prominence. Many original property owners relocated to newer housing, while abandoned or subdivided homes were subsequently occupied through intricate formal and informal agreements. Over the decades, factors such as overcrowding, ambiguous responsibilities, inadequate maintenance, and administrative delays have gradually compromised the structural integrity of the built environment. This complex post-independence history elucidates why the district today simultaneously embodies national pride, experiences chronic housing challenges, and serves as a critical test case for Algeria’s management of its living heritage.

An Urban System, Not a Monument

Architecturally, the Casbah’s distinction lies not in any individual edifice, but in the overall coherence of its urban fabric. ICOMOS emphasizes that the dramatic descent from the fortress to the sea is integral to the old city’s unique form. Its lanes meander, narrow, and cascade down the slope, forging a dense, pedestrian-oriented environment that intimately mirrors its topography.

While some streets are broad and open to markets, others constrict into narrow corridors or pass beneath covered sections known as sabat, where buildings bridge overhead, providing essential shade and shelter. These semi-outdoor spaces offer more than just aesthetic charm; a 2024 study revealed that sabats effectively create cooler, shaded, and ventilated microclimates, significantly reducing fatigue during uphill climbs in Algiers’ hot climate. Thus, what appears picturesque to a visitor is also a testament to ingenious environmental adaptation.

The district’s domestic architecture is as fundamental to its identity as its palaces and mosques. Recent scholarship categorizes three prevalent house types within the Casbah: the classic courtyard house; the narrow chebek house, built around a very small patio; and the compact alaoui house, typically lacking a central courtyard and relying instead on upper-floor rooms and windows for natural light and air. The quintessential form is organized around a central patio, or wast al-dar, which historically served as the household’s adaptable core: a vital space for light, ventilation, movement, daily family life, and occasional celebrations. Originally designed for single extended families, this pattern was later altered as subdivided spaces accommodated multiple unrelated households simultaneously.

Among the Casbah’s notable landmarks, Dar Aziza, dating to the mid-sixteenth century, stands as the last significant remnant of the vanished Djenina palace complex. Dar Mustapha Pacha, constructed in 1798, is considered one of the city’s most important Ottoman palaces and has been meticulously restored for its future role as a museum of miniature, illumination, and calligraphy. The Ketchaoua Mosque, originally built in 1612 and expanded in 1794, underwent conversion into a cathedral following the French conquest, only to be reconverted into a mosque in 1962 – its own layered history mirroring the Casbah’s broader narrative.

Craft, Market, and Mixed Life

Historically, the Casbah functioned as a truly mixed-use urban environment. A recent mapping study of Ottoman-era land use reveals that the Casbah was not segmented into distinct residential, commercial, or religious zones. A typical neighborhood often integrated a mosque, a public bath, a communal oven, a fountain, food shops, and domestic courtyards. Additionally, foundouks – traders’ inns providing lodging, storage, and business facilities – accommodated itinerant merchants and their goods. The very streets exhibited fluidity in their use, with some transforming into vibrant Friday market spaces on specific days of the week.

This integrated urban fabric directly influenced social life. Domestic courtyards served as highly adaptable spaces: functioning as everyday family areas, providing protected environments for women’s domestic, social, and ceremonial activities in numerous households, and hosting events like weddings. Zawiyas, meanwhile, fulfilled combined religious, educational, and sometimes sheltering roles.

Craftsmanship continues to be an integral part of the district’s living identity, despite the disappearance or relocation of many workshops. Algerian tourism authorities recognize the old city as a historic hub for artisans. The Museum of Popular Arts and Traditions, located in the sixteenth-century Dar Khedaoudj el Amia, actively preserves collections that bridge traditional practices with museum interpretations.

Conservation: Progress and Persistent Challenges

UNESCO’s 2025 state-of-conservation decision acknowledged significant progress in the Casbah since 2023, citing restored monuments, enhanced infrastructure, improvements to tourist routes, and strengthened coordination between the Ministry of Culture and the Wilaya of Algiers. However, it also highlighted serious outstanding concerns, including advanced structural decay in numerous buildings, incomplete inventories, and the necessity for more robust, high-level coordination.

UNESCO specifically expressed concern regarding thirty additional buildings identified in an advanced state of deterioration and mandated a comprehensive inventory of all properties within the site. Furthermore, it requested Algeria to submit the revised PPSMVSS—the permanent safeguarding and enhancement plan for the protected sector—to enable an assessment of its effectiveness in halting the ongoing degradation of the urban fabric. The subsequent full state-of-conservation report is scheduled for submission by December 1, 2027.

The urgency of these concerns is not abstract. In September 2024, press reports, citing Algeria’s civil protection services, confirmed a building collapse in the Casbah that resulted in the death of a woman and injuries to three relatives. For residents, therefore, conservation is not merely about preserving monuments, but fundamentally about ensuring safe homes, reliable services, and restoration efforts that are compatible with daily life.

The foundational planning instrument for the Casbah is the PPSMVSS, Algeria’s permanent safeguarding and enhancement plan for the sector. The Agence Nationale des Secteurs Sauvegardés of Algeria notes that the Casbah’s plan was approved by Executive Decree No. 12-133 on March 21, 2012, and remains central to the management of this protected area. UNESCO’s evaluations consistently emphasize that this plan must broaden its scope beyond individual monument conservation to comprehensively address housing conditions, demographic shifts, and the sustainability of traditional commerce and craftsmanship.

Tangible momentum has indeed been reported. In 2024, the Wilaya of Algiers detailed the completion of rehabilitation work across several sites, including the Dey Mosque at the Citadel, Dar el Baroud, the house linked to independence-war figure Djamila Bouhired, the mausoleum of Sidi Abderrahmane Thaâlibi, Dar Bachtarzi, and two buildings on Rue Ouslimani. This also encompassed the rehabilitation of 143 buildings, comprising 1,515 flats in the Lower Casbah. In October 2025, Algérie Presse Service announced that the historic Djamaa Safir mosque had reopened to worshippers following its restoration.

Visiting the Casbah Today

For first-time visitors, the most practical entry point is the Lower Casbah, conveniently located near Place des Martyrs and the Palais des Raïs, also known as Bastion 23. Algeria’s tourism directorate provides an official 1.3-kilometer historical circuit that connects several of the district’s landmark houses and mosques, ranging from the House of the Sultan within the Casbah to the Al-Riyas Palace.

Engaging a guide is highly recommended – not due to any romantic mystique of the Casbah, but because of its dense, layered urban fabric and often inadequate signage. Visitor arrangements are decentralized, with tours typically organized through hotels, local hosts, independent guides, or travel agencies.

A District Still Unfolding

The Casbah defies categorization as a mere static monument. Instead, it is a dynamic place, continuously inhabited and undergoing restoration – a district where Ottoman palaces, French colonial street interventions, wartime memories, and everyday laundry lines coexist within mere steps of each other.

UNESCO’s own assessment aptly encapsulates this tension: its authenticity and integrity are largely preserved, yet its comprehensive management remains only partially realized. Perhaps the most authentic way to comprehend the Casbah is not as a heritage site simply to be observed, but as a vibrant, living neighborhood whose future narrative is actively being shaped by its residents, craftspeople, conservation specialists, and the public authorities entrusted with its preservation and repair.