A new hotel, 1,300 apartments, shops and entertainment space could all be built as part of one of Birmingham's largest-ever city centre regeneration schemes.
The new development is set to be constructed across up to eight buildings at the Martineau Galleries site, off Corporation Street, with a report last year suggesting one of the structures could reach up to 50 storeys.
More details have now emerged about Hammerson's long-awaited plans for the run-down site after an environmental impact report was submitted to Birmingham City Council ahead of outline plans being lodged this summer.
The proposed scheme could eventually have 1.3 million sq ft of office space, up to 1,300 residential units across three of the buildings, a 400-bedroom hotel and up to 295,000 sq ft of commercial space for a broad range of leisure and entertainment uses including shops, cafés and bars.
Underground parking for around 450 vehicles is proposed and there will also be new public spaces and pedestrianised areas.
The application site is bordered by Bull Street, The Priory Queensway and Moor Street Queensway and includes 1960s shopping precinct The Square and neighbouring NCP car park in Dale End.
Hammerson, which co-owns and operates the Bullring and Grand Central, has been planning to develop the 13-acre site since it acquired it in 2015 but this is the first time firm details of what could eventually occupy the land have been published.
According to this new report by consultancy Turley, all buildings currently there will be demolished and replaced over a phased development.
A statement from Hammerson said: "We aim to submit an outline application later this year for an exciting development on this site, having been in comprehensive discussions with Birmingham City Council for some time.
"Ahead of finalising our plans, we will be engaging with everyone concerned as part of a public consultation and will also share the feedback received.
"We are very keen to discuss the future of the site with as many people as possible to help shape a fantastic new gateway to Birmingham."
Construction will be influenced by work on nearby HS2 and the 'Eastside' extension of the West Midlands Metro which is due to run down Bull Street and Albert Street to connect up with the HS2 terminal in Curzon Street.
If proposals are submitted later this year and backed promptly by city planning chiefs, it would enable work to start as early as 2021 with a planned completion date of 2038.
Birmingham-based practice Glenn Howells Architects is working on the masterplan for the project.
In 2016, local MPs branded the site an "eyesore" and urged Hammerson to either get on with its redevelopment or sell it to a company that would.
Redevelopment plans were given a boost just before Christmas when the Government handed The Square a Certificate of Immunity from Listing after local campaign group Brutiful Birmingham applied for it to be listed.
Granting the certificate means it cannot be listed for five years, giving Hammerson more time to draw up its regeneration plans.