HDR photography (High Dynamic Range Photo) is a process where you take several photo pictures with very different exposures (different speeds or different apertures) and then use a software to pack them into one image packing the whole range of light. The result is often a little erie but allows to take images impossible to catch in any other circumstance.
Good examples come from the Japan HDR group on Flickr, like the following.
But if you want to test your capacity at this, I suggest you dig into the following links:
- How to Create Professional HDR Images in Photoshop
- HDR photos with the GIMP
- Using the GIMP exposure-blend plugin
- How to Create High Dynamic Range Photos
Whatever your software package, you should find something to use.