I think that what gives this photo most impact is the colours, limited mostly to browns and dark blues. I love how the architecture of this place, although of different style and obviously built on different time periods, somewhat links together because of the materials and colours used. This gives the place a calm, serious, orderly mood. The colour of the sky harmonises wonderfully with this, and the dark, heavy clouds add the feeling of anxiety and doom. The composition could be improved, as the subject of the photo is directly in the centre, making the composition slightly boring and less entertaining to view than if it was slightly more to the right or left. However, overall it's a great picture, and I really admire the colours you managed to capture. Keep up the great work!