Rijksmuseum has open its collections to the world by using CC0 Public Domain Dedication for the digital reproductions. CC0 licensing means that you can use the fine art you find even in commercial projects!
Artstor’s ever-growing public collections offer approximately 1 million freely accessible images, videos, documents, and audio files from library special collections, faculty research, and institutional history materials, as well as hundreds of thousands of open access images from the Metropolitan Museum of Art.
NGA Images is a repository of digital images of the collections of the National Gallery of Art. On this website you can search, browse, share, and download images. A standards-based reproduction guide and a help section provide advice for both novices and experts. More than 51,000 open access digital images up to 4000 pixels each are available free of charge for download and use.
When The Met was founded in 1870, it owned not a single work of art. Through the combined efforts of generations of curators, researchers, and collectors, our collection has grown to represent more than 5,000 years of art from across the globe—from the first cities of the ancient world to the works of our time. You can filter for open access items in the search.