Moonlight casts a spectral glow over a river landscape framed by castle ruins on one side and a distant windmill on the other, where a boat has stopped at the bank across mirrored waters. The contrast between the luminous sky and enveloping darkness reveals a technique rooted in chiaroscuro, heightening atmospheric depth and drama. Layered tonal transitions and minute detailing align the painting with Romantic landscape traditions that dwell on transience and solitude.