The Hermitage -The jewel of St Petersburg has pages devoted to permanent and temporary collections. This site has a virtual tour in which you can zoom in for closeups of objects d'art. The Guggenheim Biloa -A museum nestled in the Basque provinces of northern Spain.
Australian museum has a wonderful art deco exhibit that promises to educate.
The Metropolitan Museum of Art -This site is actually better than visiting the Museum, because you can zoom in on the individual pieces.