Where to Find Free Public Domain Images
If you're looking for high-quality public domain and free-to-use images, here are some great resources:

1. Wikimedia Commons – https://commons.wikimedia.org/
One of the largest collections of public domain and freely licensed media, with images, videos, and audio files from historical archives, museums, and educational sources.

2. Openverse (formerly Creative Commons Search) – https://openverse.org/
A search engine that pulls free-to-use images from multiple sources, including Flickr, Wikimedia Commons, and museums.

3. The Met Museum Open Access – https://www.metmuseum.org/art/collection
Offers high-resolution images of artworks from the Metropolitan Museum of Art that are in the public domain.

4. The Smithsonian Open Access – https://www.si.edu/openaccess
Millions of high-quality public domain images from Smithsonian museums, covering art, history, science, and more.

5. The British Library Flickr Collection – https://www.flickr.com/photos/britishlibrary
A massive archive of historical books, maps, and illustrations released into the public domain by the British Library.

6. Library of Congress Digital Collections – https://www.loc.gov/pictures/
A vast collection of historical photos, maps, and illustrations from the U.S. Library of Congress.

7. National Gallery of Art Open Access – https://www.nga.gov/open-access-images.html
Over 50,000 images from the National Gallery of Art, all in the public domain.

8. New York Public Library Digital Collections – https://digitalcollections.nypl.org/
A treasure trove of historical photographs, illustrations, and maps from the NYPL’s archives.

9. Rijksmuseum Digital Collection – https://www.rijksmuseum.nl/en/rijksstudio
High-resolution images of Dutch master paintings and artworks from the Rijksmuseum.

10. Europeana – https://www.europeana.eu/en
A European Union initiative providing access to millions of public domain images from museums, galleries, and archives across Europe.

11. NASA Image and Video Library – https://images.nasa.gov/
Free-to-use images and videos of space, planets, astronauts, and NASA missions.

12. RawPixel Public Domain Collection – https://www.rawpixel.com/free-images
A curated selection of high-quality historical and artistic public domain images.

13. Pexels – https://www.pexels.com/
Free stock photos and videos with a modern, artistic touch, available for commercial and personal use.

14. Unsplash – https://unsplash.com/
High-resolution photography from professional photographers, free to use for any purpose.

15. Pixabay – https://pixabay.com/
Over 2 million free stock images, illustrations, and videos, including public domain content.

16. Public Domain Archive – https://publicdomainarchive.com/
A mix of vintage and modern high-resolution public domain photos.

17. FreeImages – https://www.freeimages.com/
A stock photo site with many free-to-use images, including public domain works.

18. Smithsonian’s Biodiversity Heritage Library – https://www.biodiversitylibrary.org/
A collection of botanical, zoological, and scientific illustrations in the public domain.

19. Art Institute of Chicago Open Access – https://www.artic.edu/open-access
Download high-resolution images of paintings, sculptures, and other artworks from the Art Institute of Chicago.

20. Yale University Art Gallery Open Access – https://artgallery.yale.edu/
High-quality images of historical and artistic works from Yale’s art collection.

21. National Gallery (UK) Open Access – https://www.nationalgallery.org.uk/
Free-to-use images of paintings from the UK’s National Gallery collection.

22. U.S. Geological Survey (USGS) Photo Collection – https://www.usgs.gov/products/multimedia-gallery
High-quality public domain images of nature, landscapes, and scientific research.

23. Getty Open Content Program – https://www.getty.edu/about/whatwedo/opencontent.html
Free high-resolution images of artworks and historical pieces from the Getty Museum’s collection.

24. Historical Images from the Wellcome Collection – https://wellcomecollection.org/works
A fascinating collection of historical medical, science, and culture-related images in the public domain.

25. Google Arts & Culture Open Access – https://artsandculture.google.com/
A collaboration with museums worldwide, offering high-resolution public domain artworks and historical photos.