Images created usually with a 3D program of sorts. Depending on the program used for a render the effects and results can be quite different.
Also, post-production is used for some blending or effects in some of the images, more or less overlapping with photo-manipulation but with a completely different source.
Oddly enough I couldn't let that one be just one rendering. Lighting makes all the difference there. :)
Enjoyed the Canyon Isle renderings. They left me wanting to be able to actually visit the place.
They were actually experiments in different render styles. I quite liked the outcome of them. ^_^
I really like those two ones! Nice that you comment them too! :)