"The judges of an international design competition to transform Union Terrace Gardens in Aberdeen are expected to announce a winner on Monday.
A referendum is to be held next month to decide if the contentious £140m City Garden Project will go ahead.
Around 15,000 people attended a two-week exhibition to view the six designs for Union Terrace Gardens last year.
The design competition has since been whittled down to two entries – the Granite Web and Winter Garden – with the winner set to be revealed on Monday morning.
The Granite Web was designed by New York studio Diller Scofidio and Renfro, while Foster and Partners – who also designed the new Wembley Stadium in London – were the architects behind the Winter Garden.
Local businessman Sir Ian Wood has pledged £50m of his money to the project and gave the Aberdeen City Gardens Trust £400,000 to fund the design competition.
Sir Ian has also agreed to cover 80% of the referendum costs, which could be as much as £250,000.
He has also promised that he will withdraw support for the gardens plans if it does not win public backing.
Voting packs will be posted across the city in the middle of February 2012 and residents given two weeks to return their vote. Residents are also set to be able to cast their vote by phone and online.
Mike Shepherd, chairman of the Friends of Union Terrace Gardens who are campaigning to retain the Victorian park, said: "The winning design in the vote that counts is Union Terrace Gardens. We are the option that preserves our heritage, keeps the trees and will not involve the council borrowing £70m.
"The design chosen will see many of the existing trees chopped down. I hope we are told exactly how many will go. The public need the facts so that they can choose between the leafy Union Terrace Gardens and what could sadly end up as Union Treeless Gardens."