Here is a great way of getting behind the scenes and science of the Aperture and Portal, it is a great of seeing just the background in action and it is playable too, which has to be bonus as well.
These are the details of the Portal 2 – Rube Goldberg Machine v1.0;
Workshop link: http://steamcommunity.com/sharedfiles/filedetails/?id=71790162 You may want to play this in the background: http://www.youtube.com/watch?v=cEdCOpcSPcU. If you are into making maps for portal, you should check out http://www.reddit.com/r/Portalmaps Good for feedback and what not.
Source [Geeks Are Sexy]