Denbigh Castle (1793), vintage architecture illustration by Thomas Girtin. Remixed by rawpixel. https://www.rawpixel.com/image/11516967/image-background-clouds-artView licenseTemples at Philae on the Nile. Watercolour by A. MacCallum, 1874. https://www.rawpixel.com/image/13954554/temples-philae-the-nile-watercolour-maccallum-1874Free Image from public domain license