I have been working on a custom map for a little while now, trying to learn the ropes to hammer and map editing. This is my first map that isn't just a large single colored cube of some sort
http://farm4.static.flickr.com/3606/3387318756_52183ca8a0_b.jpg^^ Click for bigger version ^^
The map is modeled after the MIS Lab I work in on campus, which is also where the server happens to be that I host the Bradley University GE:S games from (thus the mainframe looking "rack" in the corner of the room).
Although this map will never be very practical to play in because of its size, I might eventually expand the map to the rest of the building that the lab is in.
It's still a WIP, but I figured I would post it here, as I think I may have mentioned it a couple times in game to a few of you.
Let me know what you think and where I can improve, but don't be to harsh, as I am still learning and it is still a WIP