The Wilderness Downtown

The Wilderness Downtown is a website that has really surprised me. All you basically need to do is put in your address and it makes a video of arcade fire's song- We used to wait, with your address. Now fine. It does. So what's so fascinating about it? It uses HTML5!! I know a bit of HTML and I can do nothing more than writing text with different fonts wiht a background. I can imagine how long it would to make a website like that using HTML! Check it out-
http://www.thewildernessdowntown.com/