While the exact date of when www was formed can be disputed, the "world wide web" as a whole is considered by many to have turned 16 today. The Internet saw the first glimpse of what would ultimately be a complete transformation of its purpose as a tool of academia and the military into a globally accepted resource and mode of communication. You can look at the W3 timeline and watch at a glance the shift from assorted datamines to a huge conglomerate of connected pages. Taking a look at the original WWW project page is a little eery, but altogether fascinating.
It's seen only exponential growth since then, and is still doing such, having just recently hit 100 million pages according to Netcraft. To think that just about all of that has happened within our lifetimes. What will the next 16 years bring?