Such a beautiful image. The sky is a little over exposed, but if you took this shot in a RAW format, there are ways to deal with that. If you took a jpeg shot, you might consider replacing the sky. Such nice detail in the wall and the castle.
Love the perspective of walking along the wall! Beautiful stone work and and clarity. The sky's a bit bright but doesn't detract from the impressive castle and mountains!
Yes agree with above comments Adrienne, that the sky is abit over exposed. Otherwise it's a great image, with the wall as an excellent lead in line. If the shot wasn't RAW, the sky can be easily darkened in PS (elements or cs3/4) if you have it. PM me if you need help.