Aqueduct near Belgrade from Views in the Ottoman Dominions, in Europe, in Asia, and some of the Mediterranean islands (1810)… https://www.rawpixel.com/image/328681/free-illustration-image-ottoman-turkey-belgradeFree Image from public domain licenseThe Water Reservoirs, the so-called Bends, in Belgrade Forest (1744 - 1763) by Johann Christian Vollerdt and Jean Baptiste… https://www.rawpixel.com/image/13732053/image-cloud-plant-personFree Image from public domain licenseTopographical view of belgrade and its surroundings and the course of the battle during its capture on august 16, 1717 https://www.rawpixel.com/image/8897119/image-art-vintage-bookFree Image from public domain licenseSerbia flag png sticker, national symbol illustration, transparent background. Free public domain CC0 image. https://www.rawpixel.com/image/6449499/png-sticker-public-domainFree PNG from public domain licenseGeneral michael and john richardson in the battle of belgrade, Gottfried Kneller https://www.rawpixel.com/image/8900091/image-art-vintage-public-domainFree Image from public domain licenseSerbia flag clipart, national symbol illustration vector. Free public domain CC0 image. https://www.rawpixel.com/image/6449491/vector-sticker-public-domain-blueFree Vector from public domain licenseSerbia flag clipart, national symbol illustration. Free public domain CC0 image. https://www.rawpixel.com/image/6446670/image-public-domain-blue-illustrationsFree Image from public domain licenseSerbo-Bulgarian War: arrival of wounded to Belgrade from Slivnitza. Wood engraving by J.N. Schönberg, 1885. https://www.rawpixel.com/image/14017345/image-cartoon-person-artFree Image from public domain licenseBelgrade and her dog Clumsey, with a military camp in the background. Engraving. https://www.rawpixel.com/image/14019804/image-background-dogs-cartoonFree Image from public domain licenseA wizened old woman with her dog, with the story of their bravery at the battles of Belgrade and Dettinghen. Line engraving… https://www.rawpixel.com/image/14016665/image-dog-cartoon-faceFree Image from public domain license