From how much pics its done? If you can provide "raw" I can take a look what can be done.. It needs little bit more light balance (depending on what SW you use for creating that), cause you have "halo" effect on roof..

D200 is fine for this.. tough, it needs some great ISO 100 performing dSLR to get really good pics..

It looks really sharp, ainŽt that "fake" HDR made from one pic with different exposures?

But anyway, it looks quite good..