Red Pearl

Credit: NASA and the Hubble Heritage Team (STScI/AURA)
Acknowledgment: J. Bell (Cornell U.), P. James (U. Toledo),
M. Wolff (Space Science Institute), A. Lubenow (STScI),
J. Neubert (MIT/Cornell)
Image source with more information

Moving further from Mars, but looking at it with more powerful eyes (the Hubble Space Telescope to be exact), we see a world of ruddy plains, dusty skies and bright polar caps.

You know, I wonder how many people actually have a map of Mars to hand when they need one? I do, anyway, so I can tell you that the bright region is Arabia Terra, while the dark nubbin on the right side is Syrtis Major.