BRL-CAD has history of decades. It would be great to show that history in form of an interactive timeline.

You can do it using any web technology you are comfortable with. I would prefer something like http://plugins.jquery.com/b1njTimeline/ to ease your work. It should be interactive, I should be able to browse through and click on dates and get the details of the events. The color scheme used should be in consistent with the website design. Usage of appropriate imagery would be preferred.