This site has lot of maps that can inspire us:
http://sillysoft.net/lux/maps/?page=1These 3 are a kinda like The Siege of Feldmere map:
http://sillysoft.net/lux/maps/Siege%20Luxhttp://sillysoft.net/lux/maps/SIEGE%20OF%20TYRE
http://sillysoft.net/lux/maps/Tyre