Errors don’t need to be ugly. On the Web, any links that are broken result in a 404 Not Found error message. There are two ways you can address this issue when your user navigates towards a broken link.
Option 1: Present the user with an old and boring default error page, which displays no information other than "There’s an error."
Option 2: The second solution is to present them with a custom error page design that can suggest alternative things they can see or do in order to resolve their problem.
Which one do you think is better? Obviously, the second option.
Here is a collection of 30 beautiful and creative 404 Not Found error message pages.
1. Mark Dijkstra
8. Frye / Wiles
18. Product Planner
22. Club Penguin