This is a typical use of HDR with bright sky light and dim interior. The top photo is the in-camera version. The bottom is post-processed by the HDRsoft plug-in for Lightroom. They look very similar, except I prefer slightly brighter and more clarity (local contrast).
One obvious difference is that the in-camera process, in order to align the 3 images, crops the edges more than necessary.

Click here to see the final photo.