Art Images for College Teaching (AICT)
AICT is a royalty-free image exchange resource for the educational community.
The site focuses on Ancient, Medieval, and Renaissance European images of art and architectural works.
http://arthist.cla.umn.edu/aict/html/
Artcyclopedia
Works of art from over 8,000 artist represented in Museums around the world.
http://www.artcyclopedia.com
Ceramique1900
This is a commercial website, however, it provides great images and information about Art Nouveau, Art Deco and Modern ceramics.
http://www.ceramique1900.com/
Fine Arts Museums of San Francisco
The website of the Fine Arts Museums of San Francisco, consisting of the de Young Museum in Golden Gate Park and the Legion of Honor in Lincoln Park. The Thinker is a searchable database containing 82,000 images from the two collections.
http://www.thinker.org/index.asp
Getty Art Research Institute
http://www.getty.edu/research/conducting_research
Library of Congress American Memory Project
American Memory provides access to written and spoken words, sound recordings, still and moving images, prints, maps, and sheet music that relate to American history and experiences.
http://memory.loc.gov/ammem/index.html
Visible Earth
NASA's Visible Earth provides earth science-related images, animations, and data visualizations.
http://visibleearth.nasa.gov/
The Metropolitan Museum of Art Timeline of Art History
A chronological, geographical, and thematic exploration of the history of art from around the world depicted by the Metropolitan Museum of Art's collection.
http://www.metmuseum.org/toah/splash.htm?HomePageLink=toah_l