Locke Park tower could open to the public this year after essential works costing £80,000 have been carried out to make it safe.
The tower had to be shut in the early 1990s because of structural problems but the Friends of Locke Park group is now working with Barnsley Council to try and get it open by the end of the year.
Group member, David Allen, said: "The idea is to make it safe first so we can get the public in, let them see what they are missing."
David said a survey has been carried out o assess structural defects and check its stability.
"Currently the conservation architect at Barnsley Council is discussing essential elements with English Heritage that need doing to ensure whatever we do to the tower, which is Grade II* listed, is in accordance with English Heritage," he said.
The tower was built in 1877 as a memorial to Joseph Locke's wife, Phoebe.