A new €1.23m raised walkway is being built over the Dart line at Dun Laoghaire to link the People's Park with the seafront.
The raised promenade will be big enough for events, "theatrics and play", according to Dun Laoghaire-Rathdown Council.
The aim is to provide a "visual and physical link to the seafront while also providing a new, contemporary public amenity space". It will include a new entrance and boundary for the People's Park, along with parasols and street furniture, picnic tables, bicycle stands and bollards.
Construction works are due to start next month, and due to be completed by March 2014.
The works will be similar to those recently undertaken outside the existing Pavilion Theatre at Marine Road in Dun Laoghaire.
The walkway is part of a major expansion of the People's Park, extending it over the railway line between Dun Laoghaire and Glasthule.
It will cover the part of the railway that runs alongside the park in the area known as the Metal Being.
The council believes the project will further enhance the amenity value of the park, which is already the location for tea rooms, a playground and a farmers' market on Sundays.
Expanding the park ties into an overall redevelopment of the old Dun Laoghaire Baths area.
The People's Park was built in 1890 as a suburban park in a formal Victorian style.
It still retains many original features, including its unusual bandstand, ornate pavillion, lodge and fountains.
Restoration work will also be carried out on existing park structures, and the gate lodge refurbished to provide a maisonette with a roof deck and a community room.
The main entrance gate at the junction of Park Road and Upper George's Street will be closed for the duration of the construction work.