I am thinking Landscape and Nature also need to be separated. Most of these are the traditional Landscape type shots, but there are a few stunning nature type shots and even some macros that, yes, would also fall under this category.
I could only narrow it down to 250. While I know that sounds crazy, have a look for yourself. 250 pictures of ridiculousness (in a good way!) I am thinking that this could be the most competitive category. Just wow.....