The Metropolitan Museum of Art has just made over 375,000 images digitally available for download and use under a Creative Commons license. Any images that the Met says are in the public domain are available “for unrestricted use, at no cost.” That means you can use them for personal purposes (computer desktop wallpaper, printing to hang on your wall) as well as artistic purposes (using these images to create your own original art) and commercial purposes.
This is an incredible resource that is definitely worth exploring!
For more information, read the article on Wikimedia: The Metropolitan Museum of Art makes 375,000 images of public domain art freely available under Creative Commons Zero
And here is a page on the Met’s website: Met Image and Data Resources: Open Access Policy
And the link to the images: Met Collection
The image above is The House of Bijapur, by Kamal Muhammad, c. 1680, currently on view in the Met’s gallery 463.