There is a directory of mindmaps available, a very large proportion of which relate to educational uses of mindmaps, concept maps, bubble diagrams and other visual representations of knowledge, ideas and thinking.

Go there by clicking this link: Mindmaps Directory

All items in the directory have a thumbnail image and a very brief description. They link to websites all over the world where the original mindmap images can be found.

Each mindmap is tagged, and you can click on a tag to see all the visual maps relating to that topic. Or you can click on a map-type to see, for example, all concept maps, all spidergrams or, naturally, all mindmaps.