BAU, the world’s leading trade fair for architecture, materials and systems, has been rescheduled from January to April 17-22, 2023. The hall structure and main topics—“The challenge of climate change,” “Affordable living,” “Resources and recycling” and “Digital transformation”—remain the same. The new topic “Modular construction” also stays on the agenda. BAU is still planned to take place with 19 halls in April.