GoCity – Code City metaphor for visualizing Go source code
Reminds me of FSV: <a href="http://fsv.sourceforge.net/screenshots/10.png" rel="nofollow">http://fsv.sourceforge.net/screenshots/10.png</a> (which was a clone of some even earlier SGI demo app  - <a href="http://www.siliconbunny.com/fsn-the-irix-3d-file-system-tool-from-jurassic-park/" rel="nofollow">http://www.siliconbunny.com/fsn-the-irix-3d-file-system-tool...</a>)<p>Anyone know of other metaphorish visualizations that might be useful for navigating code or graphs?