The refurbished museum will feature a new front of house and shop layout with special areas for education and family groups, including a 24-seat audio visual lounge and a 140sq m exhibition area for touring exhibitions "at a scale that we haven't been able to do before".
Stark said there would be only minor cosmetic changes to the outside.
"Really, I think our overall aim is to have people's astonished reactions when they walk into what seems like a largely unchanged building and see how changed the interior will be."
While the Queens Park building has been closed, people have been able to access the museum at its temporary Ridgway St location - which attracted just over 35,000 visitors during the year to June 30.
"While your museum is closed it is still very much open so you'll see some very gratifying visitor numbers and some very, very gratifying satisfaction form two survey's we've run during that time," Stark said.