Default set of wallpapers for Ubuntu 13.04 have been finalized. 13 wallpapers were selected out of over 300 entries. This set of wallpapers will be available to all users when they install/upgrade Ubuntu. Have a look at them.
Download Ubuntu 13.04 default wallpapers:
While these wallpapers will be available in Ubuntu 13.04, it does not mean you can not get them in your current Ubuntu OS. You can download all these wallpapers in a zip file from this link.
Of course, you can download wallpapers for Ubuntu from different sources, but you will require some effort to make a slide show of wallpapers of your choice in Ubuntu. Don’t forget to tell which one you liked the most.