Poe's "Fairyland" begins like a ghost story and ends like a joke told in a whisper. The opening is all haze: "dim vales," "shadowy floods," woods so "cloudy-looking" that we cannot make out their shapes "for the tears that drip all over." Nothing in this landscape is solid. Even the explanation is odd, since the blur seems to come from weeping, not from mist. Then the moons arrive. They are "huge," there are many of them, and they "wax and wane" with a hypnotic "Again--again--again--". The poem gives them faces, "pale faces" whose breath puts out the starlight, so the sky itself seems alive and slightly sinister.
The poem's centre is a strange nightly ritual. At "about twelve by the moon-dial," one moon, "more filmy than the rest," sinks over a mountain peak and spreads over the land like a vast tent or blanket, covering "hamlets," "halls," woods, sea, and "every drowsy thing." The verbs are soft and falling: "Comes down--still down--and down." The sleepers are not frightened by this. They are "buried up quite / In a labyrinth of light," and the poem sighs, "how deep!--O, deep! / Is the passion of their sleep." Light, usually something that wakes us, becomes a place to get lost in. In the morning the moon-covering floats into the sky among the tempests, and here the poem starts to wink. The speaker cannot say what it looks like: "Like--almost any thing-- / Or a yellow Albatross." A poet who gives up on a simile halfway through is clearly enjoying himself.
That playfulness is the key to the poem's tone. The speaker keeps stepping out of the dream to comment on it, as if he were a slightly pompous tour guide. The moon was used as a tent, "Videlicet a tent," he says, borrowing a stiff Latin word meaning "namely," and then adds, "Which I think extravagant." He notes that the spirits have tried various moons and found one kind "upon trial" to be "the best," as though they were comparing mattresses. Mixing the eerie with the domestic is what keeps the poem from being merely pretty. The unearthly becomes oddly homey, and the homey becomes unearthly.
The form supports this. The lines are short, mostly four or five beats, and the rhythm skips along without settling into a strict pattern. Rhymes arrive quickly, mostly in couplets ("down" and "crown," "falls" and "halls," "quite" and "light"). Some are deliberately showy, like "eminence" and "circumference," and "however" and "dissever," which sound almost comically pleased with themselves. Others are loose, such as "tent" and "extravagant," so the music wobbles like something half remembered on waking. The dashes everywhere keep the reader moving in short, breathless steps, and the exclamation "O, deep!" lets the poem sink, as the sleepers do.
The ending turns to the human world. The moon's "atomies," its tiny particles, break into "a shower" that the "butterflies / Of Earth, who seek the skies" bring back as a "specimen" on their "quivering wings." The butterflies are called a "Never-contented thing!" It is tempting to read them as dreamers or imaginative people who reach for a higher world, never rest, and return carrying only a trace of what they saw. That is an inference from the imagery, not something the poem states, but it fits the final picture of a delicate scrap of moonlight carried home on trembling wings.
What makes "Fairyland" worth reading is how much atmosphere it builds from almost no story. Poe is better known for the dread of his tales and for the tolling gloom of "The Raven," but here the same instinct for mood produces something lighter, a nocturnal fantasy that is dreamy, faintly eerie, and slyly humorous at once. It shows that a poem can create a world mostly through sound, repetition, and tone, and that wonder and mockery can sit side by side.