Panoramic interior of Cathédrale Saint-Jean-Baptiste in Vieux Lyon, France.

. The interior of Cathédrale Saint-Jean-Baptiste in Vieux Lyon, France, is seen in a very wide panoramic view from the nave towards the choir and sanctuary. Wooden pews form parallel rows across the foreground. Tall pale-stone piers rise into pointed arches, and the ribbed vaulting overhead draws the eye across successive bays towards the far end of the church. Side aisles are visible to left and right, with openings between the clustered columns. Daylight filters through coloured stained-glass windows, casting muted blue, red and amber hues among the pale cream and warm sandstone surfaces. The distant eastern windows are particularly bright, creating a luminous background to the sanctuary furnishings. Ropes and portable barriers organise visitor movement near the altar area, while flags and individual pieces of church furniture stand between the architectural columns. The extreme breadth of the photograph is particularly effective in showing the plan of this large medieval building: an expansive central aisle, arcades on either side, a lofty vaulted ceiling and a clearly articulated eastern termination. The cathedral is also known as the Primatiale Saint-Jean, the historic seat of the Primate of the Gauls, on Place Saint-Jean in Lyon's old town. According to the City of Lyon, building work ran from 1175 to 1481, incorporating both Romanesque and Gothic architecture. Its medieval stained glass and carved fabric are important features of the city's religious heritage. Lyon's cathedral has also been associated with major historic events, including the 1600 marriage of Henri IV of France and Marie de Médicis. The church stands at the foot of Fourvière within the historic centre of Lyon. The cathedral is part of the UNESCO-listed Historic Site of Lyon, which encompasses Vieux Lyon and the slopes of Fourvière.