A triangle shaped wooden background texture pattern at the Shanghai Performing Arts Center. Original public domain image… https://www.rawpixel.com/image/3305646/free-photo-image-background-wood-texture-wooden-floorFree Image from public domain licenseBlue and purple mosaic design. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282852/free-photo-image-pattern-jewelry-public-domainFree Image from public domain licenseAn office building with a glass facade shrouded in fog. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282947/free-photo-image-office-buildingFree Image from public domain licenseWhite abstract geometric artwork from Dresden, Germany. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3283970/free-photo-image-pattern-artwork-abstractFree Image from public domain licenseAn angular shot of a tall glass facade in Boston. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286870/free-photo-image-office-building-architecture-modernFree Image from public domain licenseStorage Jar (Olla) with Black, White, and Hathed Linked Scrolls, Triangles, and Stepped Motifs by Ancestral Pueblo (Anasazi) https://www.rawpixel.com/image/8940310/photo-image-pattern-art-blackFree Image from public domain licenseRavinia Park Casino Building: Window by Peter Joseph Weber (Architect) https://www.rawpixel.com/image/8937712/ravinia-park-casino-building-window-peter-joseph-weber-architectFree Image from public domain licenseBowl with Radiating Striped Bands and Triangles and Interlocking Zigzag on Exterior by Salado https://www.rawpixel.com/image/8943488/photo-image-wood-pattern-artFree Image from public domain licenseFoam textured wall background. Original public domain image from Flickr https://www.rawpixel.com/image/4042545/photo-image-background-texture-abstractFree Image from public domain licenseChemistry: geometric representations of crystalline substances. Coloured engraving by J. Pass, 1802, after C. Hauy. https://www.rawpixel.com/image/13965084/image-background-paper-artFree Image from public domain licenseOptics: diagrams of reflection and refraction of light. Coloured engraving by R. & E. Williamson, 1820. https://www.rawpixel.com/image/13955066/image-paper-cartoon-artFree Image from public domain licenseWorld of Metal. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286234/free-photo-image-architecture-buildings-textureFree Image from public domain licenseAbstract pattern in a gray building facade in Dresden. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3305563/free-photo-image-abstract-pattern-texture-public-domainFree Image from public domain licenseMechanics: diagrams of forces, statics and dynamics. Coloured engraving by J. Pass. https://www.rawpixel.com/image/13961485/image-background-paper-artFree Image from public domain licenseBlack-and-White Storage Jar with Abstract Geometric Motifs by Acoma https://www.rawpixel.com/image/9010313/black-and-white-storage-jar-with-abstract-geometric-motifs-acomaFree Image from public domain licenseJar with Two Plumed or Horned Serpents with Birds and P-shaped Motifs by Casas Grandes https://www.rawpixel.com/image/8940893/photo-image-birds-pattern-artFree Image from public domain licenseDesign for an Octagonal Plate (1880-1910) painting in high resolution by Noritake Factory. Original from The Smithsonian… https://www.rawpixel.com/image/2848904/free-illustration-image-pattern-noritake-chinaFree Image from public domain licenseWooden geometric pattern Shanghai. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3296441/free-photo-image-wood-geometric-texture-pngFree Image from public domain licenseLooking 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 licenseA white latticework ceiling in the British Museum. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282181/free-photo-image-abstract-geometric-textureFree Image from public domain licenseLow-angle shot of suspension bridge. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3285885/free-photo-image-steel-pattern-high-riseFree Image from public domain licenseSheffield, United Kingdom. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286942/free-photo-image-steel-background-engineering-architecture-electricFree Image from public domain licenseDivision of Research Resources: 25 Years of Service to Biomedical Research--with New Ideas for the Future. Original public… https://www.rawpixel.com/image/9647160/image-medicine-pattern-lightsFree Image from public domain licenseAngular modern architecture with pattern at North Art Museum Drive. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286905/free-photo-image-cc0-pattern-architecture-buildingsFree Image from public domain licenseMen and women dancing and playing music. Coloured engraving by J. Keyse Sherwin. https://www.rawpixel.com/image/13964278/image-background-cartoon-faceFree Image from public domain licenseA glass building reflecting other buildings in the windows. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286496/free-photo-image-aircraft-airplane-architectureFree Image from public domain licenseSilberturm. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286936/free-photo-image-windows-office-chess-architectureFree Image from public domain licenseLow-angle shot of an abstract office building. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3285396/free-photo-image-abstract-architectural-architectureFree Image from public domain licenseA triangular edge of a modern white building in Nizhny Novgorod. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286641/free-photo-image-architecture-building-cc0Free Image from public domain licenseA concrete facade with sharp protruding edges. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286763/free-photo-image-car-sport-architecture-modern-concrete-buildingFree Image from public domain licenseBuddha on top of a tiered pavilion. Painting by an Indian artist, 18--. https://www.rawpixel.com/image/13969360/buddha-top-tiered-pavilion-painting-indian-artist-18Free Image from public domain licenseE. W. Blatchford Residence: Lunette Depicting Autumn by Peter Bonnett Wight https://www.rawpixel.com/image/8937733/blatchford-residence-lunette-depicting-autumn-peter-bonnett-wightFree Image from public domain licenseBedcover (Basket Pattern Quilt) by Mary Katharine Ashbrook Hill (Maker) https://www.rawpixel.com/image/9003436/bedcover-basket-pattern-quilt-mary-katharine-ashbrook-hill-makerFree Image from public domain license