ARTslanT - A large collection of art, museums, and news on art exhibitions.
Artcyclopedia, a search engine that locates web information on 5,000+ artists.
Chicago Art Map - This site has a map to all art galleries and museums in Chicago as well as links to the galleries.
The Electric Gallery, with many galleries. A unique collection of artworks. While many of these 200+ artists hang in prestigious museums, others are as yet relatively unknown. Specializing in Haitian art.
IAD's Gallery - A gallery with about 10,000 images right here on this website.
Vatican Museums at the Vatican. The Vatican Museums are one of the most famous and renowned cultural institutions. Virtual online tours and online collections. Contains high definition images and virtual visits for Sistine Chapel, Raphael’s Rooms, Pinacoteca, Egyptian Museum, Etruscan Museum and Ethnological Missionary Museum in 5 languages. Worth exploring!