Changes
/* Light switches */
* '''Foyer and stairwell light switches''' can be found on the right-hand wall, just around the corner to the right, at the foot of the stairs. There is a second switch for the stairwell lights at the top of the stairs.
* '''Light switches on the left at the top of the stairs.''' One is for the stairwell lights; the other for the observing floor incandescents.
* The '''switch for observing floor fluorescent lights''' is located inside the small door facing the stairs, next to the controls for the air conditioning.
* The '''switch for upper dome fluorescent lights''' is on the grey Observing Floor Control Panel on the wall by the North pier.
=== Ground floor facilities ===
