Refurbishment works started last month at the Dame Street site
New proposals could see the former Central Bank on Dublin's Dame Street turned into a Central Plaza with shops and a rooftop viewing area.
Investment firm Hines and Peterson, which acquired the building earlier this year, is submitting a planning application to Dublin City Council.
It would see the creation of a mixed-use scheme which will incorporate retail, restaurants and café uses at street and basement level.
The plans also provide for the creation of a two-storey rooftop hospitality and viewing area.
Refurbishment works started last month at the site, restoring the granite stone cladding and external steel supports on the building.
Brian Moran, senior managing director of Hines Ireland, said: "The Central Plaza proposal represents a significant investment by Hines and Peterson in the creation of an outstanding mixed-use scheme that will reinvigorate this iconic city centre building located in the heart of our capital.
"Our application will include an exciting mix of retail shopping, cafés and restaurants at street and plaza level and in a newly created lower plaza area.
"Meanwhile, with unique 360° views of the Dublin skyline, the proposal includes the creation of a new 20,000 sq ft rooftop destination within the building’s existing roof space, providing a viewing area and hospitality space catering to conferences, events, and exhibitions."
This would be encased in a new, glazed roof.
Another key aspect of the proposal is the removal of the railings at the site, which were installed in 1998.
The firm say the Central Plaza would have the potential to accommodate 1,000 office workers and create more than 300 full and part-time jobs upon completion.