The architecture of the city of Paris encompasses a history of more than two millennia. Paris’s earliest known architecture dates to the start of the 1st century, when the Gallo-Roman city of Lutetia developed on the Left Bank and the Île de la Cité. The city subsequently expanded across the Right Bank and the present location of many important ecclesiastical monuments was determined after Clovis I, king of the Franks, made Paris the seat of the Merovingian Kingdom at the start of the 6th century. The cathedral of Notre-Dame, the abbey church of Saint-Germain-des-Près, and the French Panthéon (formerly the church of Sainte-Geneviève) were all built on Merovingian sites. Although there is little evidence of the city’s architecture from these early periods, it nevertheless established two enduring principles that broadly characterize the development of the city’s architecture over time. First, Paris’s urban fabric has followed an ongoing process of centrifugal expansion, engulfing the surrounding land until 1869 when it was decided to annex the old eleven faubourgs and make them the surrounding arrondissements, whose outer edges mark the municipal limits of the city. In the 20th and 21st centuries, urban development projects continue apace in the banlieues, or suburbs, beyond the city’s limits, while building campaigns within the capital have principally taken the form of urban infill and renovation projects. Second, subsequent rulers have consistently appropriated the same sites and rebuilt or extended them as a mark of political ambition. This was the case for important Christian sites as well as for the city’s palace complexes, such as the early-13th-century Louvre, which was consistently occupied, rebuilt, and expanded during the Old Regime; partially used as a museum during the French Revolution; and only transformed into a museum in its entirety in the 1980s when President François Mitterand stamped the buildings with his own political ambition in his bid to again transform the city. Collectively, the process of urban expansion and the reappropriation of sites have made the city’s architecture dense with historical layers from different periods of time. It has been the task of historians to peel back these layers to study the social, cultural, and material significance of the city’s architecture. To present the literature on Paris’s architecture in light of its vast history, the following bibliography begins with more general literature and research sources, and it then progresses chronologically, starting with Lutetia’s architecture and ending at the close of the 20th century. As the bibliography moves forward in time, the scholarship becomes denser, especially in the 19th century. This focus in large part reflects the recent nature of the city’s existing built fabric, which was mostly constructed starting in the mid-19th century.