Go to the curator in the British Museum and ask him museum between 7am and 7pm
Ask curator ACQUISITIONS
Night at the Museum' will be added to your journal.
Find the lazy janitor in the museum (WNNWW from curator), ask lazy entrance
Go to service room in museum: (5S from lazy janitor) and you get this message:
You receive 157430 experience.
As the janitor said, this room is used to move artefacts(sp) inside the Museum.
To your surprise, a broom is lazily placed to pry the door to the outside open!
You could use it to sneak into the Museum at night!
'Night at the Museum' has been updated in your journal.
'Night at the Museum' has been marked complete in your journal.
To activate the displays at night, you need the staff of magi and need to be hiding in this room before 7pm. When the museum closes at 7pm, you can leave the room to activate the displays.
Note that if the night guards catch you, they will immediately kick you out of the museum, so kill them before they see you (sneak/vanish/shoot).