You find large image files of famous art available for free and/or public use from a variety of museums and art collections worldwide.  Just look for the Open Access policy or Creative Commons Zero (CC0) license or search their collections using the tag 'public domain'.

Some of these collections include:

- [Open Access Images - National Gallery of Art](https://www.nga.gov/open-access-images.html) (over 50,000 images)
- [The Art Institute of Chicago](https://www.artic.edu/open-access/open-access-images) (over 50,000 images)
- [Los Angeles County Museum of Art](https://collections.lacma.org/) (over 20,000 images)
- [Europeana](https://www.europeana.eu/en) (over 31,000,000 images)
- [Metropolitan Museum of Art on the Internet Archive](https://archive.org/details/metropolitanmuseumofart-gallery) (over 140,000 images)
- [The Met Collection](https://www.metmuseum.org/art/the-collection) (over 490,000 works)

And there are many others.  However, bear in mind some collections span multiple institutions.  So, for example, 4,000 art museums and other institutions in Europe already submit their collections to the Europeana project, so there is no need to search each museum there. 

*Please also note: some collections represent all of an institution's works, which may include some works that are not free and open access. Before using an image outside of fair-use, always check the image's metadata page, or use the collections' handy search tools to restrict your searches to Open Access, Creative Commons Zero (CC0), or public domain.  When in doubt, contact the institution, or your country's copyright office, for details on legal use.*

Enjoy!

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