My second map. I tried to make this map as interesting as I could at the time of me making it, which wasn't too interesting. I was drunk at the time.
Basically, both teams start out at opposite ends of the map (Duh), and there is a raised platform for snipers, but so people don't just go up there and camp I made the middle wall (Which has 2 doors on either side) high enough so snipers on the ledge could not hit people on the ground, only people on the other sniper tower. There is also a ledge about half way up from the ground to the sniper tower that spans the sides of the arena.
Cons: It's only 2 textures for the whole map. There is no lighting, advanced architecture, props, or texture flow.
Improvements: Use more textures! When you play this map it makes it hard to tell the difference between a doorway and a wall. I cannot see where the ledges are on the walls. Also add some lighting to give this map some mood. As it is right now it's very plain.
Notes: Here are some tutorials to help you out.
Architecture Advanced Lighting(HDR)Displacements