View from the bottom of a deep well on the blue sky above. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3305055/free-photo-image-abstract-triangle-spiralFree 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 licensePolygon pattern backgrounds abstract shape. https://www.rawpixel.com/image/14197375/polygon-pattern-backgrounds-abstract-shapeView licenseA milkmaid in Dresden pouring milk from a churn into a large mug for the dog who is yoked to the cart carrying milk churns.… https://www.rawpixel.com/image/13968285/image-dog-person-artFree Image from public domain licensePoggenmühle, Hamburg, Germany. 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