Official tours are only for 'official' visitors (and big parties). There's a program to get students visiting if you're in that boat, otherwise, I'm sure a HN Googler would be happy to host you if you're local. What sort of work would you be interested in - engineering? product management?* anything specific within that you'd want to see?<p>Of course, you do get a nice tour and lunch if you get interviewed :)<p>Edit: Ha. Somewhat appropriately, were you to have a campus tour of Mountain View around about today, and should you visit a bathroom in that time, you'd see a quote from pg's "Maker's Schedule, Manager's Schedule" on the back of the stall door...