The entrance to the headmaster's (or headmistress', depending on the era in question) office at Hogwarts is behind a statue of a gargoyle on the seventh floor. When given the proper password, the gargoyle will leap aside, and the wall behind it will split in two to reveal a spiral stone staircase that moves like an escalator.
Once in the door, visitors ride on a spiral stone staircase that moves slowly upward as the gargoyle's entrance closes behind them. The staircase leads to a highly polished oak door with a brass knocker in the shape of a griffin.
The walls of the office are covered with portraits of previous Headmasters and Headmistresses. The wall immediately behind the Headmaster's desk has a shelf holding the Sorting Hat. Gryffindor's sword is kept in a glass case beside the Sorting Hat. Another wall of the office holds a fireplace that can be connected to the Floo Network when needed.
