In 1989, British physicist Tim Berners-Lee invented what would be called the "World Wide Web." The first trials were held in December 1990 at the laboratories ofCERN.
On April 30, 1993, CERN published a statement -- on the Web, no less! -- that made the technology behind the World Wide Web available on a royalty-free basis. (Specifically, this was the software required to run a web server, a basic browser and a library of code.)
The first website in the world was dedicated to the World Wide Web project itself. The website described what the Web was and instructed how to access others' documents.
And thus the modern public Web was born, at info.cern.ch.