This Museum of Museums collects links to the sites of any variety of museums from around the world, with the very ambitious idea of linking every single museum together for one mass site of collective knowledge. (It’s nice to have reasonable goals, I suppose). Art galleries, dinosaurs, music and any other topic that you can think of is someone’s museum obsession and can be found within the categories of this site. You can even view the Museum of Bad Art, if that is more to your taste.
And then, there are those virtual museums — the places that don’t exist in the real world and yet, are repositories of information. For example, there is a museum for toaster ovens, if that is your thing. And the Museum of Talking Boards (meaning: Ouiji) that can raise some goosebumps on people.
I can envision some neat virtual field trips from my classroom, with links and reactions and descriptions right from the class Weblog site.