The Getty just released 88,000 images under CC0 (open image licenses)!https://creativecommons.org/2024/03/13/getty-museum-releases-88k-images-of-artworks-with-cc0/
In addition to the images, key information about each object is available under CC0 and easily searchable, including artist name, title, date, culture, medium, dimensions, object type, and more.
https://www.getty.edu/news/download-edit-print-your-favorite-getty-artwork-for-free/