Pictures of Landmarks I’ve taken a lot and I noticed the most favorable & popular ones almost follow below criteria:
1.Normally the object should be quite clear & with good light or background.
2.The whole effect of the picture will look better with a balance conposition, no matter what its layout: vertical or horizon, far or near, center or besides, but should have the focus & to present the most attractive parts which you believe.
Besides above 2 points, I personally think it can be “not bad” pictures, but sometimes still feel many are lack of animation, especially similar pictures are too much for the same topic. One time by occasionally, I took a picture of Nagoya Castle in Japan, it happened to be autumn and around are many maple trees. With the maple leafs accompany with the building, when the picture came out I surprised to find it had so deep autumn mood and also add some vitality to the whole picture. So since then, I tried more & more to combine the around atmosphere with the landmarks which I wanna shot. Sometimes the picture came out quite beautiful & meaningful in this way, for e.g. the big Ben in London, I personally feel this picture quite charming, not just because the hundreds of historic building but also merged with the pigeon which presents peace and harmony.