Isn't it just like any other office?

I work in a small FM radio station and we quite frequently get visits from listeners, both on request and unannounced.

I'm not sure what sort of showbiz glitz and glamour they're expecting; apart from one room with a few microphones and a mixing desk in it, it's just a few fairly dull offices in an old house, with computers and desks and papers lying around. People often leave feeling a little disenchanted after we've made them a terrible cup of tea. They come thinking they're going to get a "tour", said tour lasts about 10 minutes if you stretch it out, awkwardness all round. We're happy to meet our listeners, they're why we exist, but there's just not all that much to see.

I can imagine Google being similar; people wanting to visit because it's Google but then being greeted by an office block not dissimilar to where they themselves work. I'm sure there are more interesting places in the area! I wouldn't, for instance, put my bank's head office on the list of places to visit in Edinburgh...