Sunlight strikes the pale stone walls of Warwick Castle, casting long shadows across the riverbank in the foreground. The castle dominates the composition, its south façade stretching horizontally across the center, with battlements, turrets, and rows of arched windows rendered in crisp, regular lines. To the left, a rounded hill rises behind the castle, covered in neat, dark green foliage and crowned by a smaller, circular structure partly hidden by trees.

A massive round tower anchors the right edge of the castle, its battlements sharply outlined against a pale blue sky that fades to a warm, golden hue near the horizon. On the grassy bank in the foreground, two men in eighteenth-century dress stand near a white dog, one gesturing with a walking stick while the other listens. Further right, another man in a tricorn hat and green coat stands alone, looking toward the river, while two more figures sit or kneel by the water's edge, one with a fishing rod extended over the water.

The paint surface is smooth and precise, with fine brushwork used to describe architectural details, the foliage of trees, and the reflections in the water. The overall palette is dominated by warm ochres, soft greens, and cool blues, creating a serene, luminous atmosphere. A long, slender boat with several seated figures and a red flag glides along the river, its reflection faintly visible in the water below the castle walls.

In the lower right corner, a pair of figures in red and white clothing sit on the grass near the water, one appearing to hold a paddle or oar. The leftmost edge of the painting is bordered by a dense stand of trees, their rounded forms painted with small, precise brushstrokes of deep green. Sunlight falls unevenly across the castle façade, illuminating the upper walls and towers while leaving the lower sections and the base in soft shadow.

Fine, dark lines define the windows, crenellations, and architectural edges, contrasting with the broader, smoother handling of the sky and grassy riverbank. The South Façade of Warwick Castle was painted by Giovanni Antonio Canal, known as Canaletto, in 1748.