High Dynamic Range photos, Carlos.
Actually, in order to create true HDR-photos, you need to take at least three photos of the same scene (camera on tripod, set to auto-bracketing), one that is a bit overexposed (to bring out the shadow parts), one that is the normal exposure, and one that is a bit underexposed, to bring out the brighter parts. (You can also work with five, seven, nine photos... as you please).
Then there is software that merges these three photos for you, and the range of correctly lit parts should be wider than a camera can capture in one exposure alone: there should be more detail in the otherwise dark, shadowy parts, coming from the overexposed photo, and parts that would normally become far too bright in one exposure only should benefit from the underexposed photo and look more "normal". You increase the light dynamics, therefore it's "High Dynamic Range". You understand?