There are many reasons why your websites needs a 404 error page. You might have moved some pages, or changed your URL structure, and now any links going to those pages no longer work.
Web servers provide your website with a default 404 error page, but this is usually a very simple, boring page which usually results in visitors leaving your website.
Many web designers take the time to build a custom 404 page, that helps keep visitors on your website, perhaps suggesting alternative content or simply keeping them amused in the face of an error.
Below you’ll find a collection of 50 unusual and innovative 404 error pages.