This is a poem about a person who is frustrated with the knowledge that they are confined to only their own experience of the world. They can only see one side of the fence, which means that he or she is limited in their view of the world.
The third stanza goes more into the idea of experiencing the world as another person, stating that to be another person is to be of a different origin, to have been brought up and raised in a different experience, along with all the trials and tribulations that comes with it.
The fourth stanza describes the narrator's desire to explore the world the way it was first explored, with mystery and wonder because it had never been seen before. Back when there were no fences, no boundaries or ties. There was only discovery...until there was death.
The last line is the culmination of all the fantasies the narrator dwells on, but that each memory remains only a fantasy to be experienced and realized by others
Life, Exploration, Frustration, Experience, Fence