The Port Lincoln Railway Museum is holding an open day on September 1 to celebrate 20 years since the museum first opened.
President of the Eyre Peninsula Railway Preservation Society Peter Knife said he hoped many people will come along to celebrate, and to support the longevity of the museum.
"We hope that many people will come along and help us celebrate, and take the opportunity to look around the many displays at the museum," he said.
"With grain haulage by rail ending in May this year, the Railway Museum has become even more important in keeping alive the story of the railways on Eyre Peninsula.
"At the same time as celebrating the 20 year milestone, the Eyre Peninsula Railway Preservation Society is also facing a "new reality" financially.
"Our future looks relatively secure, but that future comes with financial challenges and the society needs all the support it can get."
Mr Knife said on a positive note there were some "exciting possibilities" ahead for the museum, with some new displays.
The society is also working towards taking over responsibility for the whole heritage-listed station building, which is owned by Genesee and Wyoming.
The museum will be open on September 1 from 12noon to 4pm.
The Lions Club will be selling sausages and steak sandwiches, and mayor Brad Flaherty and Member for Flinders Peter Treloar will speak at 1pm before a "birthday cake" is cut and shared.