A watercolour drawing of the North front of Windsor Castle, seen from below. A long wall runs across the centreground, with a white cottage with red roof on the far right. Inscribed in pencil at lower right, 'Drawing by T. [?] Sanby'. Probably a design for a project to add a Picture Gallery at the West end of the North Terrace by extending Queen Elizabeth's Gallery.

The flatness of the outlines and the long thin sheet of paper mean that this drawing and RCIN 914592 (showing the same view before the proposed additions) should be compared with RCIN 914602, a sheet that Sandby made using a camera obscura. Another drawing (RCIN 914591) shows a design for the Picture Gallery alone. The design was never carried out. Canaletto painted a view of Windsor Castle from this viewpoint in 1747.