For years, I've wanted to get shots of cities like Dol Amroth from angles where you can see the horizon and the rooftops at the same time. Due to chunk rendering limits (and the limits of my rigs), this is near impossible to do well. The fog helps make this attempt look alright in this case.
This tower has been the subject of many a screenshot over the years, and I don't blame its photographers one bit. Still, it does make it hard to come up with different styles and angles for it. In this case, I felt that the warm morning lighting went well with the fog surrounding the rest of it.