Thanks to Google's Webmaster Forum Italian Community (on Google plus) I found the first page of the first website in history.
The page has a pagerank 7, published by CERN.
The date of birth of the World Wide Web is commonly referred to in the August 6, 1991, the day when the computer English Tim Berners-Lee published the first website thus giving rise to the phenomenon of "WWW" (also called "the triple W").
The idea of the World Wide Web was born two years earlier, in 1989 at CERN HTML and HTTP network protocol.

Home Page of first web site ever

(Conseil Européen pour la Recherche Nucléaire) in Geneva, the most important European physics laboratory. The British researcher was struck by how some Italian colleagues used to transmit information over a phone line from one floor to another institution displaying information via video. On 13 March 1989 Tim Berners-Lee introduced it to his supervisor the document Information Management: a Proposal that was valued "vague but interesting." At its base there was a project of the same Berners-Lee and his colleague, Robert Cailliau, to develop a software for sharing scientific documents in electronic format regardless of the platform used, in order to improve communication, and therefore the cooperation, among researchers of the institute. Beside the creation of the software, also began the definition of standards and protocols to exchange documents over computer networks:

In Italiano:

Alla fine di Aprile 2013, la prima pagina del web del mondo torna al suo Url originale ( sotto) quello del CERN.
Sui è trattato non sono di un'operazione nostalgia, come molti l'hanno definita, ma di un vera e propria azione di archeologia web.
Di seguito, la pagina completa