A towering façade fills the entire surface, its pointed arches and vertical columns rendered in a haze of luminous color. No single stone or sculpted detail stands out; instead, the surface shimmers with dappled light and shifting hues. Brushstrokes are short and layered, building a dense texture that suggests the play of sunlight across the carved stone.

The upper towers and pinnacles are barely distinct from the sky, which glows with a pale blue and lavender light. At the center, a large rose window is hinted at by a circular burst of color, surrounded by radiating patterns that merge with the architecture. The lower part of the portal is awash with warm orange and pink tones, blending into cooler blues and purples at the edges.

There are no figures or signs of daily life; the entire composition focuses on the monumental presence of the cathedral itself. The paint is applied thickly in some areas, creating a tactile surface that catches the light and enhances the sense of atmosphere. The left and right edges of the painting dissolve into vertical streaks of blue and violet, softening the boundary between the cathedral and the sky.

Near the upper corners, faint spires and pinnacles are barely outlined against the background, their forms merging with the surrounding color. Light falls most strongly on the central section of the façade, where the warmest pinks and oranges are concentrated, while the lower corners are shadowed in deeper purples and browns. A subtle horizontal band of yellowish light appears just above the base, suggesting sunlight striking the lower architecture.

Throughout the surface, the paint is applied in broken, irregular dabs and swirls, creating a sense of flickering movement and blurring the outlines of architectural features. The title, Rouen Cathedral, Portal, identifies the specific focus on the main entrance of the church. The work belongs to the Impressionism movement, as noted in the museum’s catalogue.