It is always the walls that come crashing down to suspend a new dawn.
Built to illuminate power and show integrity, but where does integrity lie in a structure soon to die?
Yet it is the bridges that hold a higher power than mere stone walls can shower.
Bridges are never blown for a new empire to be grown, but bridges are commonly built to support an empire's tang and hilt.
Have you ever noticed that? bridges tend to never be destroyed by humans in offense, but they have been in defense, for example, the British destroyed bridges in Belgium during WWI to stop the German advance. It was also a sole Belgian fort that was captured by the Germans and was used to destroy many of the other forts around it (there was a big gun). In case you are unfamiliar with the symbolism, bridges represent connections and relations. Walls represent isolation and integrity on one's own (in my mind).