describe the surroundings of the house of usher ?what was there effect on narrator?

The surroundings of the house of Usher is pretty gloomy (remember this is Poe story). It is even a “dull, dark, and soundless day.” The narrator thinks that the house is pretty damn creepy. It has a "diseased atmosphere" and he thinks that it has absorbed some kind of evil. The structure of the house seems solid but the inside is disintegrating. The house and surroundings are, of course, symbolic of his friend Roderick's condition. Although his body seems to be at least functioning, his mind is disintegrating. The author feels apprehensive about all of this. Perhaps he has read Poe's other stories and wants to get out of there (that was a joke). The narrator begins to feel the sickness that permeates this house but he persists to help his friend.