An alchemist in his laboratory. Oil painting by a follower of David Teniers the younger. https://www.rawpixel.com/image/14016541/image-face-person-bookFree Image from public domain licenseKasteel Schaesberg (1852) by Alexander Schaepkens, Alexander Schaepkens and Simonau and Toovey https://www.rawpixel.com/image/13765267/image-paper-cloud-frameFree Image from public domain licenseMaan gezien door sterrekijker (1880 - 1900) by Andries Jager https://www.rawpixel.com/image/13757846/maan-gezien-door-sterrekijker-1880-1900-andries-jagerFree Image from public domain licenseUnidentified elderly woman seated near a table by J Porter https://www.rawpixel.com/image/14306892/unidentified-elderly-woman-seated-near-table-porterFree Image from public domain licenseA vaccinated man grows horns in front of a couple with a lancet. Coloured etching, c. 1800. https://www.rawpixel.com/image/14001705/image-paper-cartoon-cowsFree Image from public domain licenseNo. 49, USMRRd Lumber Yard, Alexandria, Va., April 1864. by A J Russell https://www.rawpixel.com/image/14285892/no-49-usmrrd-lumber-yard-alexandria-va-april-1864-russellFree Image from public domain licenseThe arch at Hermit's Rest, Grand Canyon National Park, Arizona (c. 1928) by anonymous https://www.rawpixel.com/image/13759820/image-paper-plant-grassFree Image from public domain licenseGezicht op de kathedraal van Milaan (1860 - 1870) by Ferrier Père Fils et Soulier, Claude Marie Ferrier, Jacques Alexandre… https://www.rawpixel.com/image/13759339/image-paper-frame-churchFree Image from public domain licenseThe Royal Hospital, Chelsea: viewed from the Surrey bank with boats on the river. Etching by T. Tagg after E. Dayes, 1797. https://www.rawpixel.com/image/14016254/image-cartoon-person-artFree Image from public domain licenseGezicht op de Sambas rivier op Borneo (1843 - 1845) by J G van der Does https://www.rawpixel.com/image/13791502/gezicht-sambas-rivier-borneo-1843-1845-van-der-doesFree Image from public domain licenseDuinrand met zeegezicht (1879 - 1918) by Marie Antoinette Marcotte https://www.rawpixel.com/image/13790824/duinrand-met-zeegezicht-1879-1918-marie-antoinette-marcotteFree Image from public domain licenseDes maladies mentales considérées sous les rapports médical, hygiénique et médico-légal / [Etienne Esquirol]. https://www.rawpixel.com/image/13992431/image-paper-cartoon-patternFree Image from public domain licenseA chemical laboratory with four chemists; one looks into a furnace. Engraving. https://www.rawpixel.com/image/14002505/chemical-laboratory-with-four-chemists-one-looks-into-furnace-engravingFree Image from public domain licenseSir John Forbes. Mezzotint by W. Walker, 1857, after J. Partridge. https://www.rawpixel.com/image/13974854/sir-john-forbes-mezzotint-walker-1857-after-partridgeFree Image from public domain licenseGezicht op de Arc de Triomphe in Parijs, Frankrijk (1856 - 1890) by anonymous https://www.rawpixel.com/image/13759370/gezicht-arc-triomphe-parijs-frankrijk-1856-1890-anonymousFree Image from public domain licensePlattegrond en opstand van de voorgevel van een gebouw (1825 - 1907) by Willem Springer jr https://www.rawpixel.com/image/13794187/image-paper-pattern-public-domainFree Image from public domain licenseGezicht op de tuin en het Palacio del Buen Retiro te Madrid (1745 - 1775) by Jean François Daumont and anonymous https://www.rawpixel.com/image/13763297/image-paper-person-artFree Image from public domain licenseGezicht op de Festival Hall van de Wereldtentoonstelling van 1904 in Saint Louis (1904) by anonymous and anonymous https://www.rawpixel.com/image/13758146/image-paper-plant-personFree Image from public domain licenseOntwerp voor een kleed (1874 - 1945) by Carel Adolph Lion Cachet https://www.rawpixel.com/image/13794551/ontwerp-voor-een-kleed-1874-1945-carel-adolph-lion-cachetFree Image from public domain licenseProfessors at Leipzig University, seen at clinical work, research and teaching: six portraits. Process print, 1908. https://www.rawpixel.com/image/14003210/image-face-person-bookFree Image from public domain licenseGalileo Galilei: interior of Villa del Gallo, Count Galletti's museum of Galileo, showing crests on the wall of a vaulted… https://www.rawpixel.com/image/14006404/image-frame-person-artFree Image from public domain license