Freely available collections

Images of art and architectural works in the public domain made available on a free-access, free-use basis to all levels of the educational community, as well as to the public at large. Emphasis on ancient, medieval, and Renaissance European art and architecture.
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An educational resource containing 85,000+ digital images of artworks and architecture (25,000+ downloadable) , including one of the largest collections of contemporary art. Offers tips related to downloading, exploring, and teaching with digital images.
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Over 1,000,000 images in the public domain scanned from 17-19th century books, including maps, geological diagrams, beautiful illustrations, comical satire, illuminated and decorative letters, colourful illustrations, landscapes, wall-paintings and so much more.
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Refine your search to images from America's leading libraries, archives, and museums in this aggregate of online digital collections, containing over 650,000 images.
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Collaborative open-access project between Google and over 150 art partners worldwide. "Users can explore a wide range of artworks at brushstroke level detail, take a virtual tour of a museum and even build their own collections to share."
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Open-source package of 750 icons targeted for designers and developers for use in mobile apps and interactive projects.
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Powered by Artstor, this open access platform includes over 100,000 zoom-able images that can be printed, exported, and shared.
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Over 100,000 images available for free download as hi-res images, including historical content such as manuscripts, paintings, etchings, early photography and advertisements and 'themes around medicine and the wider history of health.'
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