These images show what St. Ninian's Hall looks like at the moment, and how it is expected to look once the development work is completed.
These artist's impressions show the annex due to be built on to the side of the hall, providing space for a new cafe, public toilets and a retail store.
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Sandy Murray, of Police Scotland, was was giving evidence at the trial of a bus driver who denies killing Ryan Baird by dangerous driving.
34-year-old Christopher Peck was involved in a head-on crash with a drunk driver. His funeral has taken place in his hometown, Workington.
The arrests come weeks after a much-publicised series of appeals to mark the 30th anniversary of the 18-year-old's death.