It encompasses nostalgia and family fun - attracting thousands of people in the summer sun and Christmas holidays alike.
But if more volunteers don't come forward a popular and affordable park attraction may not be on offer to future generations.
Eaton Park Miniature Railway, run by around 40 volunteers from the Norwich and District Society of Model Engineers (NDSME), aims to operate its steam, diesel and electric models every Sunday.
Mark Rhodes, publicity officer for the NDSME which has 100 members, said: "It is fun running the passenger railway for the public.
"People join our society for all sorts of reasons. It encompasses all sorts of hobbies from clock makers to railway engine building.
"Our railway volunteers are predominantly older and getting involved isn't all about driving the trains. It is about maintaining the site, which includes cutting back a large hedge.
"In recent years we have lost a lot of experience, which is valuable. We have to think what is going to happen in 10 to 15 years.
"We don't want the railway to become a bit of park history because there is no one to run it. The first priority is to look after what we have here."
The society first started running model trains on a test track in Eaton Park in 1959 but it evolved and in 2006 it opened up to passengers.
Visitors can now enjoy one lap of the 800-metre track on one of the society's trains which run at 6mph.
"We don't want people to go too fast. We want them to have a nice enjoyable time. Tickets are pocket money prices. Children love the trains as do adults," Mr Rhodes added.
The train enthusiast said the attraction was an asset to the park, along with the cafe and crazy golf, and being in the green space made people feel as though they were in the countryside.
Volunteers hope to run the attraction from 11.30am to 4.30pm, as long as the weather is good.
In January passenger numbers averaged between 300 and 400 each day it was running.
For more details about volunteering visit https://ndsme.org
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