Very fun site. Cool idea indeed. I think it's a neat piece of art. I wish I could scroll sideways, though. The page got cut off for me.

If you are on the desktop, you should be able to scroll sideways either by choosing a menu icon at the top, or by clicking on a panel (which will rotate the panels to the left). On the phone you can visit a panel by choosing the icon from the rotating carousel at the bottom, or by swiping the panels to the left or right.