Why was the author have some events happen on one side of town and some events happen on the other? What is he trying to say? (In maniac Magee story)

The question below refers to the selection “ozymandias” by percy bysshe shelley. the traveler seems to believe that — a. monuments are eternal b. the passage of time is necessary and inevitable c. we must preserve relics of past civilizations d. even the greatest works are destroyed by time