A lot of people asked about how I took the image on the left and developed what was on the right. It's a combination of HDR, Color Grading, Tone-Mapping and more. But all the colors were in the image, I just developed them.
I've posted a complete walkthrough over at TipSquirrel.com. Be sure to head over and check it out as well as look at some of the other great articles over there.
http://www.tipsquirrel.com/pro-workflow-techniques-start-to-finish/