Actually much more than just a beautiful site, an amazing and brilliantly executed multi media experience.
To borrow from the Wikipedia entry (which has all the detail about this project) was a theatrical multimedia experience and marketing campaign launched in the summer of 2007 using Voyeurism as a vehicle.
The website is fascinating, you can spend hours watching, trying to piece together the stories as you click around and watch what happens behind closed doors. The music is amazing too.
Thankfully it has been preserved for the ages on the BigSpaceship website.