This week I was doing some research and I often found that horrible error blank page in several websites. I instantly recalled a showcase we had a while back with 40 Creative 404 Error Pages to Inspire You and decided to do a new roundup on 404 error pages. I simply love when someone spends time designing an error page, even knowing that this page won’t be seen that much – or at least it shouldn’t be seen. This is a major proof of consideration for users. It’s knowing and remembering that sometimes we all make mistakes and end up in the wrong page. So for those few times when something goes wrong, it’s much better to see something nice.
Here's some other articles that you will definitely find useful.