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Mr Burt, who was an officer at the prison and now works at the Otago Corrections Facility at Milburn, showed people the police cells, shower blocks, remand cells and recreational facilities, answered people's questions and told a few stories about prisoner behaviour.
Mr Harvey said a common request from would-be tour goers was if it was possible to get a photograph of themselves behind bars while visiting the prison, which they could.
Publicist Sarah Girven said the tours were a fundraiser for the trust and a chance for the public to see the prison's "bare bones" before and refurbishment was done by the trust.