Online collection portal to thousands of artworks from 14 City of Paris museums. Over 150,000 images are identified as part of the public domain and available for download and usage.
Images are searchable and downloadable – the item details (acquisition and rights section) will indicate whether the work is in the public domain.
Smithsonian Open Access
Download, share, and reuse millions of the Smithsonian’s images -- both 2D and 3D digital items – from across the Smithsonian’s 19 museums, nine research centers, libraries, archives, and the National Zoo.
Vienna City Library
Access historical Viennese address books, travel guides, manuscripts from Johann Strauss, Hugo Wolf and more. Digital objects have a CC 1.0 license (public domain). Only available in German.
In addition to objects related to the city’s history and daily life, the museum has a significant collection of Viennese art. "Open Content" includes all images labelled with a download and share symbol or found using the search function “Open Content”. You can share, reuse, and modify these images for all purposes without asking for permission (including commercial use).