This webpage is the end of the internet although it is different. It contains only broken links, which makes it a great test page for broken link checkers.
This page has 12 internal broken links and 12 external broken links. The broken links are based on normal compontents (javascript, css, images) and give normal errors as found on billions of webpages on the internet. 12 links are hidden (javascript, css, css-background-image) and 12 links are visible below (images, links).