Two great sites to look for Wallpapers.

Wallpaper: Blue Marble 2012, Artic View.

MacBook Pro retina display wallpapers (2880×1800)

They were configured for the new MacBook Pro, but they work with everything else, including the New iPad.

By Rob Sheridan [Flickr Link], Via @Parislemon

New Wallpaper from iOS 6, Rippled Water.

New wallpapers from Mountain Lion.

Another place to get cool iOS Wallpapers

5 Totally Rad Retro Apple Wallpapers

From OS X Daily, they work with iPad (Retina ready) and Mac.

9 Beautiful High Resolution Wallpapers for OS X & iOS

OSX Daily

OSX Daily has some beautiful wallpapers for your Apple devices, go check them out. [Link]

Nine Retina Resolution Wallpapers

OS X Daily

These are really nice. [OS X Daily]

Retina Display ready wallpapers for your iPad at 2048px.com

Go to their page and enjoy. [Link]

Via CultofMac