Graeme Massie Architects' winning design, the Hall of Columns, was selected from a shortlist of five by a panel of judges.
Judges were impressed by a number of features, including:
- The lighting columns, which will provide a unique and iconic image for Birmingham
- The fact the scheme is multi-dimensional, incorporating trees, seating, water and lights which can be appreciated from every angle
- The 'timeless simplicity' of the design which can be used for a wide range of events
- Good fit with existing and planned developments in the area
- The design complements the history of the square as well as providing an iconic design for the future.
Sir Albert Bore, leader of Birmingham City Council, said: "This competition has attracted entries from national and international designers, with the quality of entries making the judges' job extremely difficult, but I am delighted that we are now at the point where we can reveal the winner.
"We believe the winning scheme offers something different for Birmingham and will reshape Centenary Square into an important public space where people can stop, relax and socialise, rather than simply passing through, as well as coming together to enjoy a diverse calendar of events."
Graeme Massie said: "We are delighted to have won the competition for Centenary Square in Birmingham. The project presents a fantastic opportunity to build on the success of the city in developing high quality public buildings and spaces, such as the Library of Birmingham and Eastside City Park. Through working closely with Birmingham City Council, key stakeholders and the wider community we hope to deliver a public space which everyone in the city can be proud of."