 For years, the activities were mostly non-commercial in nature, for example large exhibitions presenting achievement of the Soviet Union space program, at which young people and local space enthusiasts could view and even enter various space capsules (or their real-size mock-ups) and obtain related technical information.After the 1989 transition to the market economy, they grounds took up a more commercial character.In January 2006 the fair was the site of the Katowice Trade Hall roof collapse.