What did the narrator see as he leaves the House of Usher?

During the whole of a dull, dark, and soundless day in the autumn of the year,

when the clouds hung oppressively low in the heavens, I had been passing alone,

on horseback, through a singularly dreary tract of country; and at length found

myself, as the shades of the evening drew on, within view of the melancholy

House of Usher.