Coleridge gives us merely a sketchy picture of man-made dome and draw our attention towards the importance and power of natural world. In fact, it is one of the central ideas of this poem that is man and the natural world. The poet paints it all over the poem, as we move from dome to river, gardens to sea. Though sometimes he shifts his focus on human characters, however, immediately switches to natural forces because it’s difficult for him to get away from this main idea. You would a tug of war between permanence of nature and humans.