which descriptive details of the interior of the house suggest that the narrator has entered a realm that is very different from the ordinary world?

This is one gloomy dying place: Dark draperies hung upon the walls. The general furniture was profuse, comfortless, antique, and tattered. Many books and musical instruments lay scattered about, but failed to give any vitality to the scene. I felt that I breathed an atmosphere of sorrow. An air of stern, deep, and irredeemable gloom hung over and pervaded all.