"I know a lot of community groups have created displays. It's been a real labour of love," she said.
"We tasked them to do something that captured the magic of Christmas, and there are some really unique displays."
Cooke said there was a lot of construction in the central city at the moment and the calendar was a way to help create some Christmas atmosphere in the CBD.
Each advent calendar window will be opened by a member of the Downtown Tauranga team about 9am each day from Saturday.
The 24 different window displays have been created by Mockingbird (in association with Acorn Foundation), Bethlehem Pottery Club, St John Youth, Inspire Education, Kai Aroha Charity Group, Tuskany Agency, Downtown Tauranga and the Christmas Heirloom Company, with project partners Tauranga City Council, Big Picture, Resene and Dobsons.