April 1996: A chunk of plaster smashes down on empty seats in the auditorium of the Usher Hall hours after a Tony Bennett concert.
July 1996: Ambitious plans for a 24 million revamp of the building are unveiled by the city council.
May 1997: The refurbishment plans are left in tatters after the Scottish Arts Council rejects a 13m lottery bid.
July 1998: Plans for a scaled back refurbishment are unveiled.
August 2000: An initial 10m refurbishment of the historic venue is finally completed.
May 2002: Plans for a second phase, costing 9m and including a glass extension, are revealed.
October 2006: With no sign of work getting under way, the cost of phase two is pegged at 19m.
February 2010: The glass extension is finally unveiled, but work on the arts quarter is not complete.
October 2010: The new-look venue and the arts quarter are officially unveiled.