Photography exhibitions are being staged at two train stations to mark the 75th anniversary of the flagship Belfast-Dublin Enterprise train service.
In 1947, at 10.30am on 11 August, a seven-carriage steam train left Belfast and headed to Dublin, bringing about a new era in cross-border travel.
The cross-border railway service would feature in the island's history, including being the subject of bomb threats during the Troubles, leading to the establishment of the Peace Train Organisation in 1989.
In its first year in service, one train travelled in each direction.
Now, 75 years later, the Enterprise service has eight daily departures in each direction, and Translink says passenger demand is on course to reach "an all-time high".
The photographic exhibits will be in Connolly Station in Dublin and Lanyon Place Station in Belfast.
The 1947 inaugural train was operated by the Great Northern Railway company and it is now jointly operated by Translink NI Railways and Iarnród Éireann.
Iarnród Éireann chief executive Jim Meade said that the service has "a rich and evocative history".
He added: "I am certain that our customers will very much enjoy the exhibition that is now on display at Lanyon Place and Connolly.
"The Enterprise train is a key economic and social connector for the people of Dublin, Belfast and the stations in between and we look forward to another 75 years of its successful operation."
Translink Group chief executive Chris Conway said that the event was to celebrate the service, staff and customers.
He said: "Whatever your reason for travel, Enterprise has been there to connect us to family, friends and opportunity, evolving with the times and better connecting Belfast and Dublin.
"We want to bring an hourly service in as soon as possible, we're already working with the SEUPB for funding, which they have committed a certain amount of funding for that, and also with the department for infrastructure and department for transport.
"We have already initiated a project team, and we hope to go into procurement for a new fleet next year which will allow us to get an hourly service within the next five years."
Some of the staff who worked on the service in its first years were among those who gathered at Lanyon Station.
Annie Chambers, nee Connolly, 94, from Belfast, worked in silver service on the dining car in the late 1940s and recalled some of the best years of her life.
She was the first woman to work on the Enterprise.
"I was the first and the only girl that worked on it for two years until I had to go to Yorkshire to help my family," she said.
"It was wonderful, the best experience of my life. I think I was 18 or 19 and I loved it. I was over the moon when I got the job because I would be travelling.
"They were the very best days of my life. I loved every minute of it and I'd never have dreamed of taking a day off.
"It was very grand, we used to get quite a lot of Americans travelling on it. After the war they were able to travel a lot more."
