So I got caught out with a quick game and had no map. I knocked this one up in about 30 minutes. The PCs had to get from one side to the other avoiding troops and snipers. They went across the roofs and then fought some ogres (while standing on the rooftops) before destroying the trebuchets. Anyway, here's the line art version (I warned you that it was rough):

Click image for larger version. 

Name:	GettingOutOfTheC&#105.jpg 
Views:	532 
Size:	1.26 MB 
ID:	22754

Feel free to use this in any way you see fit (within the terms in my sig).