Buildings in the Alfama district, Lisbon, Portugal https://www.rawpixel.com/image/462067/premium-photo-image-street-city-lisbonView licenseAn orange headed lizard with a blue body crawling on a rocky surface in Ruaha National Park. Original public domain image… https://www.rawpixel.com/image/3288692/free-photo-image-stone-adventure-africaFree Image from public domain licenseBadaling, Pechili province, China: part of the Great Wall of China. Photograph by John Thomson, 1871. https://www.rawpixel.com/image/13983922/photo-image-frame-person-artFree Image from public domain licenseThe Viminal hill, Rome, seen from the slopes of the Quirinal. Etching by B. Pinelli, 1825. https://www.rawpixel.com/image/13991328/image-paper-cartoon-frameFree Image from public domain licenseYongquan Monastery, Drum Mountain, near Foochow by John Thomson and Tung Hing https://www.rawpixel.com/image/14276137/yongquan-monastery-drum-mountain-near-foochow-john-thomson-and-tung-hingFree Image from public domain licenseLebanon - View of Mount Lebanon, Taken from Above the Village of Ehden by Francis Bedford https://www.rawpixel.com/image/14321898/image-art-mountain-public-domainFree Image from public domain licenseGorge de Houra by John Stewart and Louis Désiré Blanquart Evrard https://www.rawpixel.com/image/14271913/gorge-houra-john-stewart-and-louis-desire-blanquart-evrardFree Image from public domain license