This is a most unusual and interesting structure. I would not have been sure it was a house from the picture. Pameladunson and I are in agreement that the strong visual difference between the rather utilitarian-looking "guard" at the roof and the more decorative fence/gate in front isn't visually pleasing. Both should be from the same architectural design family, although they need not be identical. The windows appear to have quite a bit of small architectural detail as best I can make out from the photo. The railing in front seems to have a scale that is better relative to those window details than does the "guard" at the roof, so I would probably opt for changing the roof "guard", not the railing in front.

If do-able dollar-wise, It might be even better to remove both the roof "guard" and the railing/gate in front and design something new for these areas that is a good match with the most striking details elsewhere on the house.