The Round Tower, plate 3 from Imaginary Prisons by Giovanni Battista Piranesi https://www.rawpixel.com/image/9016233/the-round-tower-plate-from-imaginary-prisons-giovanni-battista-piranesiFree Image from public domain licenseView of Pont au Change, the City Theatre, Pont Neuf, Conciergerie Prison, etc. taken from Pont Notre Dame, from A Selection… https://www.rawpixel.com/image/8975431/image-paper-sky-artFree Image from public domain licenseThe Round Tower, plate 3 from the second edition of Carceri d'invenzione (Imaginary Prisons) by Giovanni Battista Piranesi https://www.rawpixel.com/image/8973352/image-paper-pattern-artFree Image from public domain license"Close up view of 'Elevator House,' Carlsbad Caverns National Park," New Mexico. Photographer: Adams, Ansel, 1902-1984.… https://www.rawpixel.com/image/8799742/photo-image-plant-vintage-public-domainFree Image from public domain licenseOffice building, architecture illustration vector https://www.rawpixel.com/image/11513676/vector-pattern-illustration-blueView licenseWire prison gate line. https://www.rawpixel.com/image/13848551/wire-prison-gate-lineView licenseWire fence gate line. https://www.rawpixel.com/image/13848553/wire-fence-gate-lineView licenseOffice building, architecture illustration https://www.rawpixel.com/image/11514164/office-building-architecture-illustrationView licenseThe Round Tower, plate 3 from Imaginary Prisons by Giovanni Battista Piranesi https://www.rawpixel.com/image/8986132/the-round-tower-plate-from-imaginary-prisons-giovanni-battista-piranesiFree Image from public domain licenseAbandoned prison architecture building fence. https://www.rawpixel.com/image/13932117/abandoned-prison-architecture-building-fenceView licenseAbandoned prison wire outdoors fence. https://www.rawpixel.com/image/13932001/abandoned-prison-wire-outdoors-fenceView licenseA silhouette of the Fernsehturm tower through netting, at sunset in Berlin. Original public domain image from Wikimedia… https://www.rawpixel.com/image/3299235/free-photo-image-prison-architecture-banisterFree Image from public domain licensea prison guard watchtower in Alcatraz Island. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3299047/free-photo-image-alcatraz-island-antenna-architectureFree Image from public domain license Watchtower from a former P.O.W. (or prisoner-of-war) camp for captured German soldiers during World… https://www.rawpixel.com/image/8067478/photo-image-public-domain-united-states-worldFree Image from public domain licenseThe Needle pinnacle at Quiraing on the Isle of Skye in Scotland https://www.rawpixel.com/image/935823/the-needle-pinnacleView licenseAbandoned prison architecture lighthouse outdoors. https://www.rawpixel.com/image/13931800/abandoned-prison-architecture-lighthouse-outdoorsView licenseAmerican flags near a window inside an office building of the US Senate. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3298374/free-photo-image-architecture-banister-buildingFree Image from public domain licenseA Perspective View of Tower Hill and the Place of Execution of the Lords Kilmarnock and Balmerino on Monday 18 of August… https://www.rawpixel.com/image/12552879/image-person-art-patternFree Image from public domain licensePrison architecture lighthouse building. https://www.rawpixel.com/image/13917349/prison-architecture-lighthouse-buildingView licenseJugurtha, King of Numidia, Thrown from His Roman Prison into the Tiber by Boucicaut Master https://www.rawpixel.com/image/14260078/image-paper-person-artFree Image from public domain licenseAllington Castle270's ~ Romans build a village at a strategic crossing place beside the River Medway. 850's ~ Viking raiders… https://www.rawpixel.com/image/11176368/image-flower-plant-grassFree Image from public domain licenseAllington Castle Maidstone Kent270's ~ Romans build a village at a strategic crossing place beside the River Medway. 850's ~… https://www.rawpixel.com/image/11176004/image-cloud-plant-grassFree Image from public domain licenseAllington Castle Grounds270's ~ Romans build a village at a strategic crossing place beside the River Medway. 850's ~ Viking… https://www.rawpixel.com/image/11176367/image-face-plant-personFree Image from public domain licenseAlcatraz Island is located in San Francisco Bay, 1.25 miles (2.01 km) offshore from San Francisco, California, United States. https://www.rawpixel.com/image/4022891/photo-image-ocean-bird-natureFree Image from public domain licenseThe entrance of the historic Trinity College. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3337541/free-photo-image-prison-tower-irelandFree Image from public domain licenseJardin [du] Luxembourg (Luxembourg Gardens) by Eugène Atget https://www.rawpixel.com/image/14278378/jardin-du-luxembourg-luxembourg-gardens-eugene-atgetFree Image from public domain licenseThe Bastille, Paris. Line engraving by J.F. Borgnet after J.F. Gudin . https://www.rawpixel.com/image/13985984/the-bastille-paris-line-engraving-jf-borgnet-after-jf-gudinFree Image from public domain licenseGuard post No. 1, State Prison, San Quentin. by Eadweard J Muybridge https://www.rawpixel.com/image/14296443/guard-post-no-state-prison-san-quentin-eadweard-muybridgeFree Image from public domain licenseAn account of the principal lazarettos in Europe; with various papers relative to the plague: together with further… https://www.rawpixel.com/image/13986633/image-papers-person-artFree Image from public domain licenseGezicht op de Montfoortse Toren te Veere (in or before 1696) by anonymous https://www.rawpixel.com/image/13776944/gezicht-montfoortse-toren-veere-in-before-1696-anonymousFree Image from public domain licenseAndrew Preble 2017-01-08. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3289898/free-photo-image-apartment-building-architecture-brickFree Image from public domain licenseTower of London. - View in the White Tower. Small Arms Stores, showing the tasteful arrangements of these weapons... by… https://www.rawpixel.com/image/14291226/photo-image-road-public-domain-towerFree Image from public domain licenseKuching, Sarawak: a square-towered building and the jail. Photograph. https://www.rawpixel.com/image/13998544/kuching-sarawak-square-towered-building-and-the-jail-photographFree Image from public domain licenseKoninklijke gevangenis te Madrid (1694 - 1737) by Pieter van den Berge, Pieter van den Berge, Staten van Holland en West… https://www.rawpixel.com/image/13748634/image-paper-horse-cartoonFree Image from public domain licenseTower of London. Interesting sculpture in the prison room of the Beauchamp Tower, by John… https://www.rawpixel.com/image/14292234/photo-image-person-church-artFree Image from public domain license