Sybill Patricia Trelawney is the Divination teacher. She is the great-great-granddaughter of the celebrated Seer, Cassandra Trelawney, and has inherited some of her ancestor's talent. Trelawney is described as a slight woman resembling an insect, draped in a large spangled shawl and many gaudy bangles and rings. She speaks in a whispy voice and wears thick glasses, which cause her eyes to appear greatly magnified. Her odd classroom in the North Tower of Hogwarts is a cross between "someone's attic and an old-fashioned tea shop"; it can only be reached by climbing to the top of the stairs and then up a ladder through a trapdoor set in the ceiling. This dim, heavily scented, and "stiflingly" warm room often affects students' wakefulness.