1. Metaphor: Poe uses the metaphor of the "vacant eye" to describe the house, suggesting a sense of emptiness and lifelessness. This metaphor sets an eerie tone.
2. Alliteration: The repetition of the letter "s" in "sea-like, sorrowful, silence" creates a sibilant effect, adding to the sense of melancholy and quiet.
3. Personification: Poe personifies the house as having "vacant eye-like windows," giving the inanimate structure human qualities and a haunting presence.
4. Onomatopeia: The word "drearily" mimics the sound of a desolate, monotonous tune, emphasizing the bleak and somber mood.
5. Imagery: Poe's vivid imagery, particularly the "sorrowful silence" and "vacant, eye-like windows," conjures a distinct mental picture that evokes a sense of unease and apprehension.
6. Parallel Structure: The repetition of the structure "nothing... nothing" emphasizes the absence and emptiness, enhancing the unsettling effect.
7. Syntax: The use of short, fragmented sentences, such as "Nothing to the north—east-south west—nothing!" creates a sense of urgency and disorientation, adding to the unsettled mood.
8. Rhetorical Question: The rhetorical question, "Who would dare to journey to this mansion?" invites the reader to ponder the potential risks and horrors associated with the house, instilling a sense of trepidation.
By skillfully combining these stylistic elements, Poe successfully generates an atmosphere of unease and intrigue, drawing the reader into the unsettling world he has created.