Landscape with a Castle depicts a mountainous landscape featuring the remains of a castle situated on an elevated rocky hill. In the foreground, rocky terrain with low vegetation gradually gives way to dense woodland. Mountain ridges shrouded in a delicate haze rise in the background, while the ruins of a sunlit castle occupy the right side of the composition.

The painting is distinguished by its emphasis on capturing the natural atmosphere and changing light conditions. Muted green and brown tones of the landscape are complemented by the bluish-grey hues of the distant mountains and the softly illuminated sky. The contrast between the shaded valley and the sunlit rock formations creates a sense of spatial depth and enhances the tranquil character of the scene.

The work is executed in oil on wood panel, measuring 13.5 × 22 cm. The painting is unsigned and framed. The catalogue records an association with the Haushofer School; neither the artist's identity nor the date of execution has been established.