Arts

Architecture

• Great Buildings
  

General

• ArtLex
  A lexicon of artistic terms with pronunciations and definitions.
  
• Grove's Dictionary of Art
  
• Grove's Dictionary of  Music & Musicians
• National Gallery of Art
  The National Gallery of Art houses one of the finest collections in the world illustrating major achievements in painting, sculpture, and graphic arts from the Middle Ages to the present. Learn about the museum and its exhibits by exploring this informative Web site.
  

Images/Artists

• Artcyclopedia: Guide to Fine Art on the Internet
  Guide to museum-quality art on the Internet. Search hundreds of art museum sites for exhibits and artists. Over 7,500 artists. An extensive searchable database for fine art. Search or browse by artist name, era/movement, nationality, subject, medium and museum name.
  
• Web Museum: Famous Paintings Exhibit
  Another useful database. Here you can search by artist, theme or period/movement.
  

Art History

• Art History Resources on the Web
  This is a very comprehensive, well-researched list of links to art history resources for a wide range of cultures and time periods. Highly recommended.
  

Ancient & Non-Western Art

• Old Stones
  This site presents selected resources on the art history of ancient civilizations, including: Egypt, Greece and Rome, Asia, and the Middle East. Two timelines (BC and AD) help you find the time period and region you're looking for.

Color 

• Color Theory and Mixing
  This site contains a variety of lessons on topics such as the history of color, the psychological and optical effects of color.