Slovak Flag (Option 3 of 4). Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3340971/free-photo-image-american-flag-cc0-creative-commonsFree Image from public domain licenseThe Temptation of Saint Anthony (ca. 1550–1575) by Anonymous Artist & Pieter Bruegel the Elder. https://www.rawpixel.com/image/8230324/image-art-vintage-public-domainFree Image from public domain licenseGreen and red aurora borealis on a starry sky over a forest. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3304615/free-photo-image-aurora-cc0-creative-commonsFree Image from public domain licenseEstonia, Tallinn. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3371602/free-photo-image-building-cc0-creative-commonsFree Image from public domain licenseView of a 4D Menger sponge. Created with mandelbulber2. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3340796/free-photo-image-cc0-creative-commonsFree Image from public domain licenseLandscape with Fields (1897) painting in high resolution by Karl Fredrik Nordstrom. Original from the Thiel Gallery. https://www.rawpixel.com/image/7728632/image-art-public-domain-artworksFree Image from public domain licenseNight ocean view, moonlight, sea. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3297941/free-photo-image-moon-sea-nightFree Image from public domain licenseA ballerina wearing a tutu and pointe shoes in Charlevoix. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3303386/free-photo-image-people-dance-ballerina-balletFree Image from public domain licenseSaruhiki to inu (between 1880-1900) print in high resolution by Shibata Zeshin. Original from the Library of Congress. https://www.rawpixel.com/image/7636940/image-art-vintage-public-domainFree Image from public domain licenseFlammulina is a genus of fungi in the Physalacriaceae family. The genus, widespread in temperate regions. Original public… https://www.rawpixel.com/image/4024676/photo-image-plant-natureFree Image from public domain license