You must have used Nature Wallpapers, Actor/Actress Wallpapers and many other type of backgrounds on your computer, but I will show you such wallpapers that could be very tough to use as background on your computer. 

Have you heard of Trippy or psychedelic images? These images look so deep inside, and you won't be able to find the end of it. You can't stare of such wallpapers for a long time. These wallpapers are not real, and they are designed by graphic designers. It's difficult to design such images, but they are cool.

You may have seen such trippy wallpapers on social media, may be you don't know what they are called. These images can make you feel giddy, but you can try once to stare. Here are some cool trippy backgrounds