Looking down a gray rectangular stairwell inside. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286777/free-photo-image-geometric-madrid-wall-textureFree Image from public domain license Pink concrete background architecture staircase building. AI generated Image by rawpixel. https://www.rawpixel.com/image/13175053/photo-image-background-shadow-artView licenseConcrete staircase in London, United Kingdom https://www.rawpixel.com/image/435052/free-photo-image-black-and-white-street-photography-architecture-curve-spiral-staircaseView licenseOriginal public domain image from Wikimedia Commons https://www.rawpixel.com/image/3296883/free-photo-image-perry-architecture-best-stone-pictures-imagesFree Image from public domain licenseDrone view of stories of staircases in an urban area. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3291949/free-photo-image-city-apartment-building-architectureFree Image from public domain license