I wish I could say something that hasn't been said already. A very good submission I think. I like the big golden eye - I can't help but think of big, bronze clockwork gears turning the inside the gate as numerous locks open and deadbolts slide away to swing wide the doors. Perhaps it's just me, but I feel almost attached to the poor thing, it's almost humanized by it's failure and depression. I can only imagine what a good source of information such a gate might be to the PCs, as it sees everyone who enters the city.