This reminds me so much of the time I went to a Google data center in...(can't say where) and helped Connie photograph images for a secret project. The data center I went to looked very similar to this, complete with a similar security personnel following you at every move. I mean, even this official Google video couldn't be made without a security man standing nearby, ready to break your neck if you even tried to screw around with the servers.
The video above is also neat because it features the 360-degree draggable interface. So if you get bored of watching the host talk about servers, you can aim the "eyes" around to another part of the facility and explore. Neat!