Campaigners trying to save Wensum Lodge staged a protest at Norfolk County Council to highlight what will be lost if its future cannot be secured.
The Conservative-controlled cabinet at Norfolk County Council made a decision in the summer to cease adult learning services at the King Street building, saying it is "no longer fit for purpose".
Councillors also agreed, at a meeting, to declare the building surplus to the council's requirements - paving the way for it to be sold.
However, hopes remain that the building could yet be saved for the community, with a Labour activist having successfully applied to Norwich City Council for it to be declared an asset of community value.
That order means the community now has six months to come up with a bid to purchase the King Street site before the council can sell it.
And a group of campaigners protested outside Norfolk County Council's County Hall offices ahead of a full council meeting on Tuesday (September 26) to highlight the importance of Wensum Lodge.
People from the Friends of Wensum Lodge, the group Artists4wensumlodge and Print Hub took part in the protest.
Dave Welsh, convenor of Artists4wensumlodge, said: "We need a community plan for the centre which will ensure its survival and enhance its role in the community as, after all, thousands of people have been students at Wensum Lodge and we believe it can continue to provide high-quality education with outstanding tutors."
Steph Pardoe. who lives in Lakenham and attends pottery courses at Wensum Lodge, said: "These spaces are worth more than gold but I genuinely feel it is being exchanged simply for money."
She said courses like pottery and life drawing, which she said cannot be replicated online, had enormous wellbeing benefits for people.
READ MORE: No u-turn over decision to shut and sell Wensum Lodge
Green county councillor Ben Price raised the issue at the council meeting.
Conservative leader Kay Mason Billig said conversations about the building's future were going on "behind the scenes".
She said: "I hope we will have a positive outcome and the sooner that happens the better."
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