 The names of structures on the Estate are a mixture of references to historic site features and individuals associated with the City of London.The roof garden of Great Arthur House is a fine vantage point towards St Paul's Cathedral and the Barbican Estate and has panoramic views across London.It is three stories high, making a virtue out of the lift's winding gear and tank housing to form a rooftop modernist gazebo, and makes the most of the small footprint of the tower block.