The Glasgow Institute of Architects, in collaboration with Glasgow Life, Glasgow Doors Open Day and Mackintosh at the Willow, are launching an exciting live-build competition during the Glasgow Doors Open Day weekend to celebrate the 150th anniversary of Charles Rennie Mackintosh. Taking place from Friday 14th to Sunday 16th of September, the competition will see the Billiard Room at ‘Mackintosh at the Willow’ on Sauchiehall Street inhabited and transformed by an installation built entirely from cardboard, which will enhance the Mackintosh-designed space.