Although walking through the building that once was the Parramatta Girls' Home might conjure up painful memories, many former inmates returned to the facility on Tuesday.
The occasion was an open day and reunion, the first since 2003.
Bonney Djuric, who was put in the home in 1970, said many other women like herself needed to return.
"There's a need for reconciliation and it's a process of healing to go [back] in there to see the place," Ms Djuric said.
"It's like seeking out demons in a way."
The girls' home is the only remaining example of a 19th century girls' industrial school in NSW. About 30,000 girls went through the institution.
Ms Djuric said the home was operated as a closed institution for 120 years and the open day was a rare chance for the public to look within its walls.
"[Many of] the public have no idea what happened there."