My personal website is also around 18-year-old. I actually do not remember how old it is. I did not have a domain at first and hosted it on AOL or something.
The backend went through a few reimplementations. Individually made html files (with front page express or something), a template tool written in Delphi, another template tool written in Java, a complete XQuery interpreter written in FreePascal
Here it was: https://web.archive.org/web/20030908174016/http://www.benibe...
But in 2005, I made a complete redesign: http://www.benibela.de/index_en.html
The backend went through a few reimplementations. Individually made html files (with front page express or something), a template tool written in Delphi, another template tool written in Java, a complete XQuery interpreter written in FreePascal