At the beginning of the poem, it feels like the speaker is in bed with his beloved, cradling him as he sleeps. But after the first stanza, the speaker's imagination begins to wander, and he envisions hillsides and glaciers, a Roman goddess, a hermit, and a population of madmen. Does the speaker actually travel around the world and meet all of these people? We're going to go ahead and say no. His imagination wanders all over the place while he's warmly tucked into bed with his beloved. He's got a pretty good imagination, if we do say so ourselves.