Of course, to get the full affect, you'll have to go there. This museum from the state of Washington focuses on trees. This directory by the WWW Virtual Library has a link to virtually every museum in the world. I haven't taken the time to check them out to find out which of them are interactive. An extensive directory of college and university web pages.
Title is self explanatory.
The World Lecture Hall Contains subject classified links to pages created by faculty worldwide. You will find course syllabi, assignments, lecture notes, exams, class calendars, multimedia textbooks, etc. The Global Campus Outstanding educational materials such as images, sounds, text, and video to be used for nonprofit, educational purposes. This one is self-explanatory. As Other Technology For People With Disabilities.