A new centrepiece for Market Square in Lancaster is due to be completed by July.
The city council said that the city centre had become “tired and uninviting” and wasn’t contributing as it should to a vibrant historic city centre.
The raised structure will be used to stage performances, concerts and public addresses, and is part of the Lancaster Square Routes project, which aims to improve the public realm in the city centre.
City councillors approved the form of the centrepiece in June, and a special committee met to agree the finishing touches at a meeting on Wednesday.
Liverpool-based design artists Smiling Wolf, and landscape architects BCA Landscape, also from Liverpool, won the contract for the work, along with Longridge-based civil engineers William Pye Ltd.
Coun Janice Hanson, Cabinet member for regeneration and planning, said: “Exploring ideas for a centrepiece in Market Square is an exciting time for the Square Routes project. Its installation will mark the end of the current phase of works to improve the heart of Lancaster City Centre which has now started.
“I am confident that a striking centrepiece in our city’s bustling Market Square which complements the city’s history and heritage will contribute immensely to this.”