The german language version of this page tells the extensive history of the Schatenseite. I won’t go into that much detail, here. Suffice to say this:

The Blog — and thus this WordPress Installation — dates back to 2004. The page itself went online much earlier, in 1997. After using static HTML I wrote some smaller CMS for this page, just to get used to some different techniques. In 2003 I turned the main page to Typo3, just to get to play with a ‘real’ CMS. Typo3 administration requires a certain amount of dedication, and being involved in many additional projects (family and stuff), I decided to make this page a pure WordPress version in 2015.

Have a look at the german version if you want to see more old screenshots. But I warn you: they’re not exactly beautiful, compared to modern standards…